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Physical Science 8th Grade Exam! Lets Pass Together.

Total questions: 234

Worksheet time: 2hrs 21mins

Name
Class
Date
1.

Stephanie leaves the house and rides to the local farmer's market with her grandmother. The graph below illustrates their trip. 

Which line segment represents the time the car is returning to the house? 

a)

Segment A

b)

Segment B

c)

Segment C

d)

Segment D

2.

To make an object move you must first apply ---

a)

an opposing force

b)

an unbalanced force

c)

a stationary force

d)

a vertical force

3.

Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?

a)

He was riding in the last car of the train.

b)

He had heat exhaustion from the overcrowded train.

c)

Oliver's body resisted a change in the subway train's inertia.

d)

Oliver's body was responding to the force of gravity.

4.

Which law of motion predicts that a moving hockey puck will continue to move in the same direction at the same speed unless acted upon by another force?

a)

Newton's First Law of Motion

b)

Newton's Second Law of Motion

c)

Newton's Third Law of Motion

d)

Newton's Law of Universal Gravitation

5.

Which law explains the relationship among mass, force and acceleration?

a)

Universal Law of Gavitation

b)

Newton's First Law of Motion

c)

Newton's Second Law of Motion

d)

Newton's Third Law of Motion

6.

The force of an object, with a certain mass accelerating at a certain rate, can be determined by using the equation below.


force = mass x acceleration


Which object would have the greatest force?

a)

A 5 kg object accelerating at 10 m/s

b)

A 5 kg object accelerating at 20 m/s

c)

a 20 kg object accelerating at 4 m/s

d)

a 20 kg object accelerating at 3 m/s

7.

According to Newton's Third Law of Motion, if Mike pushes down on the springboard to being his dive, what is the reaction force?

a)

Mike splashing into the water

b)

The springboard pushing Mike into the air

c)

The height of the water when Mike enters the water

d)

The sound the board makes as he pushes into the air

8.

If the man and the ball travels 90 m in 9 seconds, what is their average speed?

a)

10 m/s

b)

180 m/s

c)

99 m/s

d)

10 meters

9.

Person on the left = 45 N

Person on the right = 32 N

What is the net force?

a)

zero N

b)

10 N

c)

77 N

d)

13 N

10.

What is speed?

a)

Speed is how far something travels in one hour.

b)

Speed is how fast it takes something to travel a set distance

c)

Speed is the distance something travels in a set amount of time.

d)

Speed is the change in velocity of something.

11.

 If an unbalanced force acts on a stationary object, the object will:.

a)

remain stationary

b)

move away from the force

c)

accelerate in the direction of the force

d)

accelerate in the opposite direction of the force

12.

A flexible structure that protects and controls what goes in and out of the cell

a)

Chromosome

b)

Cell wall

c)

Cytoplasm

d)

Cell Membrane

13.

The rigid outer layer that protects and supports plant cells

a)

Cell membrane

b)

Cytoplasm

c)

Cell Wall

d)

Organelle

14.

The jelly-like substance found inside the cell that contains organelles

a)

Cytoplasm

b)

Mitosis

c)

Cell membrane

d)

DNA

15.

A structure located in the nucleus that contains DNA

a)

Gene

b)

Chromosome

c)

DNA

d)

Organelle

16.

The stage of the cell cycle in which the cell's nucleus divides in two

a)

Interphase

b)

Cytokinesis

c)

DNA

d)

Mitosis

17.

Where in the cell does photosynthesis happen?

a)

chloroplast

b)

mitochondria

c)

cell membrane

d)

nucleus

18.

Where in the cell does cellular respiration happen?

a)

chloroplast

b)

mitochondria

c)

nucleus

d)

cell membrane

19.

The breaking down of sugar with oxygen to make energy is called ____.

a)

cellular respiration

b)

photosynthesis

c)

fermentation

d)

diffusion

20.

Which of the following has the correct order of phases of mitosis?

a)

telophase, metaphase, anaphase, prophase

b)

prophase, metaphase, anaphase, telophase

c)

metaphase, prophase, anaphase, telophase

d)

telophase, prophase, metaphase, anaphase

21.

Which of the following cells is in Telophase?

a)
b)
c)
d)
22.

What phase is this cell in?

a)

prophase

b)

anaphase

c)

telophase

d)

metaphase

23.

What phase is this cell in?

a)

Anaphase

b)

Telophase

c)

Interphase

d)

Metaphase

24.

What phase is this cell in?

a)

Prohase

b)

Interphase

c)

Anaphase

d)

Telophase

25.

What phase is this cell in?

a)

Anaphase

b)

Cytokinesis

c)

Interphase

d)

Prophase

26.

Which of the following has the correct order of phases of mitosis?

a)

telophase, metaphase, anaphase, prophase

b)

prophase, metaphase, anaphase, telophase

c)

metaphase, prophase, anaphase, telophase

d)

telophase, prophase, metaphase, anaphase

27.

Which of the following cells is in Telophase?

a)
b)
c)
d)
28.

What phase is this cell in?

a)

prophase

b)

anaphase

c)

telophase

d)

metaphase

29.

What phase is this cell in?

a)

Anaphase

b)

Telophase

c)

Interphase

d)

Metaphase

30.

What phase is this cell in?

a)

Prohase

b)

Interphase

c)

Anaphase

d)

Telophase

31.

What phase is this cell in?

a)

Anaphase

b)

Cytokinesis

c)

Interphase

d)

Prophase

32.

What is the acryonym used to remember the four phases of mitosis?

a)

P, S, A, T

b)

P, R, O, M

c)

P, T, A, P

d)

P, M, A, T

33.

In which phase of mitosis do chromosomes condense or come together?

a)

Interphase

b)

Anaphase

c)

Prophase

d)

Cytokinesis

34.

In which phase of mitosis do chromosomes line up along the middle of the cell?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

35.

In which phase of mitosis do the chromosomes split apart?

a)

Interphase

b)

Prophase

c)

Metaphase

d)

Anaphase

36.

The division of the cytoplasm is called _______.

a)

Mitosis

b)

Interphase

c)

S Phase- Synthesis

d)

Cytokinesis

37.

Why do cells replicate?

a)

growth, repeat, release

b)

growth, repair, replace

c)

glow, repair, replace

d)

growth only

38.

The cell spends most of it's life in ________________.

a)

mitosis

b)

cytokinesis

c)

Interphase

d)

None of the above

39.

Which statement is a part of the cell theory?

a)

all cells come from preexisting cells

b)

bacteria are prokaryotic cells

c)

eukaryotic cells are complex

d)

humans are multicellular

40.

The ___ is the basic unit of sturucture and function of organisms

a)

atom

b)

cell

c)

matter

d)

all other answers are correct

41.

When does DNA replication happen?

a)

Interphase

b)

Anaphase

c)

Cytosis

d)

Telophase

42.

Cell splits into two.

a)

Metaphase

b)

Cytokinesis

c)

Interphase

d)

Prophase

43.

Fully grown parent cells split into two halves resulting in two daughter cells with the exact DNA as the parent.

a)

Binary Fission

b)

Budding

c)

Fragmentation

d)

Vegetative Reproductions

44.

Bacteria reproduce asexually by a process called

a)

replication

b)

meiosis

c)

mitosis

d)

binary fission

45.

Chromosomes condense from long stands into rod like structures. 

a)

Prophase

b)

Interphase

46.

Choose all the items that are elements.

a)

NaCl (table salt)

b)

Sulfur

c)

O2

d)

Water

e)

Air

47.

Choose all of the items that are compounds.

a)

NaCl (table salt)

b)

Sulfur

c)

O2

d)

Water

e)

Air

48.

Choose all of the items that are mixtures

a)

NaCl (table salt)

b)

Sulfur

c)

O2

d)

water

e)

Air

49.

Which element is similar to Li?

a)

Be

b)

K

50.

Which element is similar to He?

a)

H

b)

Ar

51.

Students in Mrs. Clark's science class are investigating a substance that has the following properties

-shiny

-bends easily

-hard, not easily broken


Based on these properties how would you classify the substance?

a)

metal

b)

nonmetal

c)

metalloid

52.

Metalloids are on the:

a)

Left side

b)

Right Side

c)

Stairstep

53.

Nonmetals are on the:

a)

Left side

b)

Right Side

c)

Stairstep

54.

A student is studying a mystery substance. It breaks easily. It has a very dull luster. It doesn't conduct any electricity. What is the most likely substance this is?

a)

Metal

b)

Metalloid

c)

Nonmetal

55.

The same student works with a new substance. He concludes it conducts electricity very well. It has a very shiny luster. When he hammers it, it simply dents and flattens. What is the most likely substance type?

a)

Metal

b)

Metalloid

c)

Nonmetal

56.

The third substance the student works with is a little brittle. It is just a little shiny. When he tries to conduct electricity through it at first, it doesn't conduct, but upon heating up, it does start to allow electrons to flow. What is the most likely substance type?

a)

Metal

b)

Metalloid

c)

Nonmetal

57.

Which two elements share common characteristics based on the periodic table?

a)

Sodium and Magnesium

b)

Chlorine and Sulfur

c)

Argon and Neon

d)

Calcium and Bromine

58.

Periods run:

a)

up and down

b)

left to right

59.

Groups run:

a)

up and down

b)

left to right

60.

How many orbitals does Nickel have?

a)

3

b)

4

c)

5

d)

10

61.

What is the atomic mass?

a)

58.693

b)

28

62.

How many protons and electrons does nickel have?

a)

28

b)

58.69

63.

How many valence electrons does the element have?

a)

1

b)

2

c)

3

d)

4

64.

What group and period does this element belong in? *

a)

period 1 and group 3

b)

period 3 and group 1

c)

period 2 and group 3

d)

period 3 and group 2

65.

What is the name of the element? (Periodic table will be needed)

a)

sodium

b)

magnesium

c)

vanadium

66.

How do you calculate the number of neutrons? *

a)

Mass = Atomic number - Neutrons

b)

Mass - Atomic number = Neutrons

c)

Atomic number = Neutrons

67.

What does the number of proton tell us?

a)

electrons

b)

atomic number

c)

atomic mass

d)

neutrons

68.

What are the horizontal rows on the periodic table called?

a)

periods

b)

groups

c)

metals

d)

nonmetals

e)

metalloids

69.
The atomic number tells you what?  READ THE ANSWERS CAREFULLY
a)
only the number of electrons
b)
 only the number of protons
c)
only the number of neutrons
d)
the number of both electrons and protons in an atom.
70.
What does 12.011 represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
71.
Which planet doesn't have a moon?
a)
Earth
b)
Mars
c)
Mercury
d)
Jupiter
72.
The inner and outer planets are divided by...
a)
The asteroid belt
b)
The oort cloud
c)
The kuiper belt
d)
a fraction
73.
Compared to the inner planets, the outer planets are...
a)
larger
b)
warmer
c)
denser
d)
better
74.
Which planet is known for it's red, rust covered surface?
a)
Venus
b)
Mercury
c)
Mars
d)
Jupiter
75.
Which is the hottest planet?
a)
Mercury
b)
Venus
c)
Earth
d)
Neptune
76.
The difference between a moon and a planet is...
a)
A moon is made of rock, a planet is made of gas
b)
Moons can only be seen with a telescope
c)
Moonss revolve around a planet, planets revolve around a sun
d)
That's no moon... ITS A SPACE STATION!
77.
____________is a planet similar to Earth in size, mass, and density.
a)
Mercury
b)
Venus
c)
Mars
d)
Neptune
78.
The right combination of temperature, water, and oxygen
a)
affects Mars’s orbit.
b)
supports life on Earth.
c)
causes gas giants to form.
d)
results in storms on Venus.
79.
What do Mercury and Venus have in common?
a)
They both thick atmospheres.
b)
They both rotate counter clockwise.
c)
They have a similar diameter.
d)
They both have no moons.
80.
Which inner planets have at least one moon?
a)
Earth and Mars
b)
Mercury and Mars
c)
Earth and Jupiter
d)
Mars and Venus
81.
Which list places the inner planets in order from largest in size to smallest in size?
a)
Venus, Earth, Mercury, Mars
b)
Mercury, Mars, Venus, Earth
c)
Earth, Venus, Mars, Mercury
d)
Venus, Mars, Earth, Mercury
82.

What is the definition of matter?

a)

Anything that has mass and takes up space

b)

A substance that is liquid, solid, or gas

c)

Anything that is pure

d)

Anything that you can see or hold

83.

What term means "take up space"

a)

Volume

b)

Matter

c)

Mass

d)

Substance

84.

What term refers to a single kind of matter that is pure?

a)

Solution

b)

Mixture

c)

Substance

d)

Matter

85.

What term refers to "two or more substances combined physically, but are still able to be separated?"

a)

Mixture

b)

Solution

c)

Matter

d)

Combination

86.

Which of the following is NOT an example of matter?

a)

Sunlight

b)

Air

c)

Tree trunk

d)

Sponge

87.

Which of the following is NOT a mixture?

a)

Salsa

b)

Guacamole

c)

Egg Salad

d)

Bleach

88.

What is the difference between a mixture and a solution?

a)

A mixture retains its properties, a solution creates new ones

b)

A mixture and solution are the same

c)

A solution cannot be separated into it's individual components

d)

A mixture is chemically bonded, a solution is not.

89.

Which term refers to "two substances that have bonded together to form a new substance"

a)

Mixture

b)

Solution

c)

Substance

d)

Matter

90.
One hot summer, you remember you left a cup of water outside. A few weeks later, you saw that the cup was empty and you remember the cup having water. What happened to the water?
a)
It evaporated
b)
It underwent deposition
c)
It melted
91.
Which statement about atoms is true?
a)
They are all the same
b)
All substances are made of just one kind
c)
You can see them with your eyes
d)
They are too small to be seen with an ordinary microscope
92.
Which liquid has the greatest density?
a)
lamp oil
b)
karo syrup
c)
water
d)
honey
93.

1. When ice melts. Its particles

a)

gain energy and begin to move

b)

lose energy and begin to move

c)

move far apart and gain energy

d)

close together and lose energy

94.
Particles closest together
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
95.
Particles move quickest
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
96.
Made of atoms
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
97.
Melts
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
98.
Particles slide past each other
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
99.
Definite shape and definite volume
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
100.
No definite shape or volume
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
101.
Definite volume but not definite shape
a)
solid
b)
liquid
c)
gas
d)
solid, liquid and gas
102.
What is happening at the boiling point?
a)
liquid to gas
b)
gas to liquid
c)
solid to liquid
d)
liquid to solid
103.
What is happening at freezing point?
a)
gas to liquid
b)
solid to liquid
c)
liquid to solid
d)
liquid to gas
104.
In which state of matter are particles packed tightly together in fixed positions?
a)
gas 
b)
solid
c)
liquid
d)
plasma
105.
Particles of a liquid
a)
are tightly packed together and stay in a fixed position
b)
have no viscosity
c)
decrease in volume with increasing temperature
d)
are free to move in a container but are in close contact with one another
106.

In which state of matter are the particles least able to move?

a)

A

b)

B

c)

C

107.

Which of these three states represents a liquid?

a)

A

b)

B

c)

C

108.

These are what type of particles?

a)

gas

b)

solid

c)

liquid

109.

Not all particles in a substance move at the same ________, some are faster, some are slower.

a)

speed

b)

direction

c)

energy

d)

fast

110.

Most forms of ________ can exist as solids, liquids, and gases.

a)

particles

b)

matter

c)

gases

d)

energy

111.

__________ is the energy that flows from warmer to cooler regions of matter.

a)

power

b)

kinetic

c)

heat

d)

liquids

112.

The 1st shell (energy level) can hold up to ___ electrons, while the 2nd and 3rd shells can hold up to 8 electrons.

a)

2

b)

4

c)

6

d)

8

113.

Other than H and He, how many electrons do atoms want to have in their outer shell to be FULL and HAPPY?

a)

4

b)

6

c)

8

d)

10

114.

An ion will always have a(n) _____ , so it will never be neutral.

a)

sweet odor

b)

low boiling point

c)

electrical charge

115.

Covalent bonds take place between...

a)

two metals

b)

two nonmetals

c)

a metal and a nonmetal

116.

Metallic bonds occur between...

a)

two nonmetals

b)

a metal and a nonmetal

c)

two metals

117.

Ionic bonds occur between...

a)

a metal and a nonmetal

b)

two metals

c)

two nonmetals

118.

Nonmetals are located to the _____ of the stair-step line, on the periodic table.

a)

right (except for H)

b)

left (except for He)

119.

With covalent bonds, electrons are _____ between the atoms.

a)

lost and gained

b)

shared

120.

The tendency for a material to oppose the flow of electrons is _____.

a)

current

b)

resistance

c)

conductor

d)

voltage

121.

Items with opposite charges _____ each other.

a)

attract

b)

repel

c)

move

d)

none of the above

122.

Items with like charges _____ each other.

a)

attract

b)

repel

c)

move

d)

none of the above

123.

Clothes clinging together and lightning are examples of _____.

a)

current electricity

b)

circuit electricity

c)

alternating electricity

d)

static electricity

124.

A good conductor is a material that does not allow electricity to flow through it.

a)

True

b)

False

125.

In a series circuit, all parts of the circuit are connected in a single path.

a)

True

b)

False

126.

Which of the following are examples of conductors?

a)

Copper

b)

Plastic

c)

Glass

d)

Aluminum foil

e)

Pencil lead

127.

Which of the following are examples of insulators?

a)

Copper

b)

Plastic

c)

Glass

d)

Aluminum foil

e)

Pencil lead

128.

When a wave BOUNCES off of a surface, that is...

a)

reflection

b)

refraction

c)

diffraction

129.

When a wave BENDS (changes speed) after leaving one medium and entering another, that is...

a)

reflection

b)

refraction

c)

diffraction

130.

When a wave passes an opening in a surface, it BENDS around the edge. This is...

a)

reflection

b)

refraction

c)

diffraction

131.

When CONSTRUCTIVE interference occurs, a ____ wave is created.

a)

larger

b)

smaller

132.

One important characteristic of sound waves is that they are ___________________ waves.

a)

mechanical

b)

short

c)

ultraviolet

d)

primary

133.

Sound waves must travel through ___________________.

a)

air

b)

a medium

c)

an outward area

d)

a short

134.

Longitudinal waves means that the disturbance of the wave travels in different directions as the wave.

a)

True

b)

False

135.

This is a visual of a sound wave. It is an example of _____________________ wave.

a)

a mechanical

b)

a longitudinal

c)

both a mechanical and longitudinal

136.

What is the source of a sound wave?

a)

Electricity

b)

Vibration

c)

Light waves

d)

Tiny nuclear explosions

137.

The crest of a wave is

a)

the highest point of a transverse wave.

b)

the lowest point of a transverse wave.

c)

the highest point on a longitudinal wave.

d)

the lowest point on a longitudinal wave.

138.

The lowest point on this wave is called a

a)

crest.

b)

trough.

c)

compression.

d)

rarefaction.

139.

The parts of this wave where the particles are compressed is called

a)

the crest.

b)

the trough.

c)

the rarefaction.

d)

the compression.

140.

In what way does a longitudinal wave move?

a)

parallel to the direction of the wave

b)

back and forth

c)

tangentially to the direction of the wave

d)

perpendicular to the direction of the wave

141.

What type of wave is this?

a)

rarefaction

b)

compressional

c)

longitudinal

d)

transverse

142.

What type of wave is this?

a)

compressional

b)

transverse

c)

longitudinal

d)

surface

143.

Waves transfer

a)

the medium in which they occur.

b)

energy.

c)

energy and matter.

d)

disturbances.

144.

A surface wave is

a)

transverse wave.

b)

longitudinal wave.

c)

a combination of both.

d)

none of the above.

145.

Examples of mechanical waves are (choose all that apply)

a)

sound waves.

b)

radio waves.

c)

microwaves.

d)

earthquakes.

146.
a)

A

b)

B

c)

C

d)

D

147.
a)

A

b)

B

c)

C

d)

D

148.
a)

A

b)

B

c)

C

d)

D

149.
a)

A

b)

B

c)

C

d)

D

150.
a)

A

b)

B

c)

C

d)

D

151.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
152.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
153.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
154.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force
155.

The tendency of an object to resist a change in its motion

a)

acceleration

b)

inertia

c)

mass

d)

frame of reference

156.
Inertia is the tendency of an object to resist a change in its ___________. 
a)
temperature
b)
shape
c)
size
d)
motion
157.
Because of inertia, a resting object will remain at ________.
a)
rest
b)
a constant speed
c)
school
d)
inertia 
158.
Because of inertia, a moving object will keep ________.
a)
at rest
b)
moving
c)
in one spot
d)
inertia 
159.
The law of inertia (Newton’s First Law) applies
a)
to both moving and nonmoving objects
b)
only to moving objects
c)
only to objects that are not moving
160.
What two forces affect gravity?
a)
mass and inertia
b)
mass and distance
c)
mass and force
d)
mass and weight
161.

A push or pull acting on an object is

a)

speed

b)

force

c)

position

d)

mass

162.
Which of the following is an example of inertia?
a)
Slamming on the breaks in your car and flying forward.
b)
An apple falling off of a tree. 
c)
Running at a cross country event. 
163.

What is needed to overcome inertia?

a)

mass

b)

unbalanced force

c)

gravity

164.

Which type of cell uses cellular respiration?

a)

Plant cells

b)

Animal cells

c)

Both Animals and Plants

165.

What are the reactants for cellular respiration?

a)

oxygen

b)

carbon dioxide

c)

water

d)

ATP energy

e)

glucose

166.

What are the products for cellular respiration?

a)

oxygen

b)

carbon dioxide

c)

water

d)

ATP energy

e)

glucose

167.

Cellular respiration occurs in the __________ of Eukaryotic cells.

a)

chloroplast

b)

nucleus

c)

ribosomes

d)

mitochondria

168.

What is the chemical equation for cellular respiration?

a)

water + carbon dioxide ----------> oxygen + glucose + ATP energy

b)

oxygen + glucose -------------> water + carbon dioxide + ATP energy

169.

The process by which plants and some other organisms capture the energy in sunlight and use it to make food is called __________.

a)

Photosynthesis

b)

Cellular Respiration

c)

ATP Synthesis

d)

Photorespiration

170.

__________ are rod-shaped organelles found in plant and animal cells that produce most of the energy needed by the cell.

a)

nucleus

b)

cytoplasm

c)

chloroplast

d)

mitochondria

171.

What kind of energy is released during cellular respiration?

a)

light energy

b)

ATP energy

c)

nuclear energy

d)

thermal energy

172.

Why doesn't photosynthesis or cellular respiration occur in Prokaryotes?

a)

Prokaryotes do not have organelles

b)

Prokaryotes do not have DNA

c)

Prokaryotes have flagella

173.

Which characteristic of a substance is considered a chemical property?

a)

its boiling point

b)

its reactivity

c)

its density

d)

its conductivity

174.

A scientist is examining an unknown solid. Which procedure would most likely help determine a chemical property of the substance?

a)

heating it to find the temperature at which it melts

b)

exposing it to a flame to see if it catches on fire

c)

hitting it with a hammer to determine if it breaks or bends

d)

placing it in water to find out whether or not it dissolves

175.

Which is an example of a chemical change?

a)

frying an egg

b)

boiling water

c)

melting butter

d)

chopping onions

176.

Which statement describes all chemical changes, but not all physical changes?

a)

Bubbles are produced.

b)

A new substance forms.

c)

Phase changes occur.

d)

A color change occurs.

177.

Choose which one is a physical property

a)

Flammability

b)

Solubility

c)

Water Reaction

d)

Magic

178.

The melting point of a substance is the temperature at which the substance changes from a solid to

a)

Gas

b)

Liquid

c)

Solid

d)

Plasma

179.

Choose the one that is a chemical property

a)

Magnetism

b)

Size

c)

Color

d)

Reactivity with water

180.

Flammability is the ability of a substance to _________

a)

Burn

b)

Transfer heat

c)

Transfer electricity

d)

Cook

181.

If you describe a substance as being corrosive, you have given a __________ property of that substance

a)

Chemical

b)

Large

c)

Physical

d)

Thermal

182.

Electrical conductivity is an example of what kind of property?

a)

Chemical

b)

Large

c)

Physical

d)

Boiling

183.

Choose the 3 that are physical properties of aluminum foil

a)

Malleable

b)

Luster

c)

Oxidation

d)

High melting point

184.

What is the outcome of observing a chemical property?

a)

Nothing

b)

A new substance is formed with different properties

c)

NaCl

d)

A rise in thermal conductivity

185.

Choose whether the following is a physical or chemical property: Malleability

a)

Physical

b)

Chemical

186.

What is the energy source for the water cycle?

a)

the Sun

b)

the Earth

c)

water

d)

the Moon

187.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
188.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
189.
What part of the water cycle does this picture show?
a)
condensation
b)
precipitation
c)
evaporation
190.
Evaporation happens when the sun ___________ water and turns it into vapor.
a)
cools
b)
heats up
c)
freezes
d)
lights up
191.
What does groundwater do?
a)
It sends water to our buildings, houses, and water transplant places
b)
to the sky
c)
to the sun
d)
To the Earth's surfaces
192.
What is it called when plants give off water vapor as a waste product?
a)
condensation
b)
evaporation
c)
sublimation
d)
transpiration
193.
Which best explains why runoff is important?
a)
It returns water to other locations on Earth
b)
It increases the chance of flooding
c)
It makes evaporation occur faster
d)
It increases condensation
194.

Which of the following chemical formulas represents the nitrogen in the atmosphere?

a)

NH4

b)

NO3

c)

NO4

d)

N2

e)

N2O4

195.

What living organisms play an important role in helping nitrogen change states in the soil?

a)

Reptiles

b)

Algae

c)

Mammals

d)

Bacteria

e)

Fish

196.

Which process in the nitrogen cycle turns dead plants and animals into ammonium?

a)

Fixation

b)

Nitrification

c)

Assimilation

d)

Ammonification

e)

Denitrification

197.

Which process in the nitrogen cycle turns ammonium into nitrates?

a)

Fixation

b)

Nitrification

c)

Assimilation

d)

Ammonification

e)

Denitrification

198.

Which process in the nitrogen cycle takes extra nitrogen from the soil and puts it back into the air?

a)

Fixation

b)

Nitrification

c)

Assimilation

d)

Ammonification

e)

Denitrification

199.

Which process in the nitrogen cycle turns nitrogen into ammonium?

a)

Fixation

b)

Nitrification

c)

Assimilation

d)

Ammonification

e)

Denitrification

200.

Which process in the nitrogen cycle occurs when plants absorb nitrogen from nitrates in the soil?

a)

Fixation

b)

Nitrification

c)

Assimilation

d)

Ammonification

e)

Denitrification

201.

In what way is nitrogen important to life on Earth?

a)

It is used in making DNA.

b)

It is used to make chlorophyll in plants.

c)

It is used in amino acids and proteins.

d)

All of the above.

e)

None of the above.

202.

Flashback! Choose the 4 macromolecules.

a)

Carbohydrate

b)

Lipid

c)

Protein

d)

Potassium

e)

Nucleic Acid

203.

*Choose all that apply* What are benefits of photosynthesis?

a)

It makes food that plants and animals can use for energy

b)

It changes light energy from the sun into a form that can be used by living things

c)

It changes carbon into a form that can be used by living things

204.

In which organelle does photosynthesis take place?

a)

Chloroplast

b)

Mitochondria

c)

Nucleus

205.

How are cellular respiration and photosynthesis related?

a)

They are the same reaction, which means that their reactants (starting substances) and their products (ending substances) are exactly the same

b)

They are opposite reactions, which means the products (ending substances) of photosynthesis become the reactants (starting substances) of cellular respiration and vice versa

c)

Photosynthesis and cellular respiration are not related

206.

Choose the three fossil fuels

a)

natural gas

b)

water

c)

coal

d)

hydrogen

e)

oil

207.

What kind of organism takes out the most carbon from the atmosphere?

a)

Plants

b)

Bacteria

c)

Animals

d)

Humans

208.

Where does all the carbon in organisms (living things) originate from?

a)

Earth's atmosphere

b)

Rocks

c)

Water

d)

Soil

209.

In the carbon cycle, animals can release carbon back into the cycle through __________ or through __________.

a)

burning . . . photosynthesis

b)

fixation . . . decomposition

c)

decomposition . . . photosynthesis

d)

respiration . . . decomposition

e)

respiration . . . photosynthesis

210.

Humans burn fossil fuels and wood, releasing carbon dioxide into the atmosphere. This carbon dioxide is then absorbed by trees for photosynthesis. These processes are contributory to which chemical cycle?

a)

The carbon cycle

b)

The water cycle

c)

The nitrogen cycle

d)

The phosphorous cycle

211.
TRUE or FALSE?
All of the carbon in existence is continually recycled in the carbon cycle.
a)
True
b)
False
212.
Carbon can be found in...
a)
The atmosphere
b)
Soil
c)
Fossil fuels
d)
All of the above
213.

Which of the following processes does NOT move carbon to the atmosphere?

a)

Animal respiration (Breathing)

b)

Volcanic eruption

c)

Photosynthesis

d)

Burning fossil fuels

214.
What is deforestation?
a)
Clearing Earth's forests on a massive scale
b)
Eating too much vegetables
c)
Going to a forest and pulling weeds
d)
Clearing the five trees in my backyard
215.

Why does cutting down trees increase global warming?

a)

trees soak up carbon dioxide and removing them causes more carbon to stay in the atmosphere

b)

trees provide shade which counteracts global warming

c)

trees absorbs the sun's energy without radiating back into the atmosphere

d)

trees drain greenhouse gases like methane from soil

216.

The motion of atoms is affected by temperature. The pictures show water at three different temperatures.

Place the pictures in order of decreasing motion of water molecules starting with the fastest at the top:

a)

Picture 1

Picture 2

Picture 3

b)

Picture 3

Picture 2

Picture 1

c)

Picture 2

Picture 3

Picture 1

d)

Picture 1

Picture 3

Picture 2

217.

What happens when a gas is heated?

a)

pressure increases

b)

Volume increases

c)


  • kinetic energy of the particles increases

d)

All of the above

218.
the tendency of an object to resist a change in its motion
a)
acceleration
b)
inertia
c)
mass
d)
frame of reference
219.

Objects with greater _________ also have greater inertia.

a)

speed

b)

mass

c)

force

d)

friction

220.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
221.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
222.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
223.

Distance divided by time is how this is calculated.

a)

Average Speed

b)

Instant Speed

c)

Acceleration

d)

Velocity

224.

Suppose you walked 80 meters in 40 seconds. What is your average speed?

a)

80 n/s

b)

2 m/s

c)

1 m/s

d)

0.5 m/s

225.

Suppose you are running at 8 mph for a race but then encounter a nice downhill. Which of the following is a likely instant speed during any part of the downhill portion of the race?

a)

0 mph

b)

8 mph

c)

9.5 mph

d)

7 mph

226.

How fast an object is traveling in a certain direction is the definition of __________.

a)

speed

b)

velocity

c)

acceleration

d)

position

227.

Which of the following time intervals shows an object moving at a constant speed toward the reference point?

a)

9:00 to 11:00

b)

11:00 to 12:00

c)

12:00 to 12:30

d)

12:30 to 14:00

228.
A change in an objects position over time.
a)
Speed
b)
Velocity
c)
Acceleration
d)
Force
e)
No choice is correct
229.
Which of Newton's laws states that the greater the mass of an object, the greater the force needed to accelerate it.
a)
Newton's 2nd Law
b)
Newton's 1st Law
c)
Force
d)
Acceleration
e)
No choice is correct
230.
The amount of matter in an object.
a)
Mass
b)
Newton's 3rd Law
c)
Newton's 2nd Law
d)
Newton's 1st Law
e)
No choice is correct
231.
Units for force and weight.
a)
Newton
b)
gram
c)
Weight
d)
Mass
e)
No choice is correct
232.
The units for work.
a)
Joules
b)
Work
c)
Newton
d)
gram
e)
No choice is correct
233.
The rate (how fast) at which work is being done.
a)
Power
b)
Joules
c)
Work
d)
Newton
e)
No choice is correct
234.
The units for power.
a)
Watts
b)
Power
c)
Joules
d)
Work
e)
No choice is correct

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6th - 8th Grade