wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Science 8 Final Quizizz Review

Total questions: 231

Worksheet time: 6hrs 35mins

Name
Class
Date
1.
What is the formula for density?
a)
density = mass x volume
b)
density = mass / volume
c)
density = mass + volume
d)
density = mass - volume
2.
Which liquid is the least dense?
a)
oil
b)
water
c)
syrup 
d)
plastic bottle
3.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
4.
Frank has a paper clip. It has a mass of 9g and a volume of 3cm3. What is its density?
a)
3 g/cm3
b)
1/3 g/cm3
c)
27 g/cm3
d)
39 g/cm3
5.
Put the liquids in order from most dense to least dense?
a)
4, 3, 2, 1
b)
1, 2, 3, 4
c)
3, 4, 2, 1, 
d)
4, 3, 1, 2
6.
What units are used to measure mass?
a)
g
b)
cm3
c)
g/cm3
d)
cm3/g
7.
If an object has a density of 3.6 g/mL and you put it into water, will it sink or float?  
a)
sink
b)
float
8.
If an object has a density of .6 g/mL and you put it into water, will it sink or float?  
a)
sink
b)
float
9.
Jack has a rock. The rock has a mass of 14g and a volume of 2cm3. What is the density of the rock?
a)
7 mL
b)
7 g/cm3
c)
28 g/cm3
d)
1/7 g/cm3
10.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
11.
A diamond has a mass of 1.2 g.  If diamond has a density of 3.51 g/mL, what is the volume of the diamond.
a)
0.34 mL
b)
2.9 g/mL
c)
2.3 mL
d)
4.2 mL
12.
What is the volume of a 250g piece of stainless steal with a density 3.0g/cm3
a)
83.3 cm3
b)
750 cm3
c)
3.01 cm3
13.

Which of the squares below is more dense?

a)
b)
14.

find the mass of an object with a density of 1.2 g/cm3 and volume 5 cm3

a)

4.17 gram

b)

0.24 gram

c)

6 gram

d)

3.8 gram

15.

Which of the following is an example of an object with a low density?

a)

Pillow

b)

Bowling Ball

c)

Brick

16.

Which of the following is an example of an object with a high density?

a)

Pillow

b)

Bowling Ball

c)

Beach Ball

17.

Which of the following is the correct units for density?

a)

grams (g)

b)

Newtons (N)

c)

cm3

d)

g/cm3

18.

What is the density of an object if it has a mass of 6g and a volume of 3cm3? (Hint: Density = mass/volume)

a)

6 g/cm3

b)

3 g/cm3

c)

2 g/cm3

d)

1/3 g/cm3

19.

What is the density of an object with a mass of 3g and a volume of 1cm3? (Hint: Density = mass / volume)

a)

1/3 g/cm3

b)

3 g/cm

c)

3 g/cm3

20.
Why do some substances float on water?
a)
they are warmer than water
b)
they are cooler than water
c)
they are more dense than water
d)
they are less dense than water
21.
What pressure does a 4000N horse exert on the ground if each foot is 10cm2?
a)
40 N/cm2
b)
100 N/cm2
c)
400 N/cm2
d)
10 N/cm2
22.
What is the equation used to calculate pressure?
a)
pressure= force/mass
b)
pressure =mass/volume
c)
pressure=area/force
d)
pressure=force/area
23.
The pressure resulting from a force of 50 N exerted over an area of 5 m2 is
a)
10 N
b)
0.1 N
c)
10 N/m2
d)
0.1 Pa
24.

What pressure will be exerted by a force of 10 N acting on an area of 4m2 ?

a)

1 Pa

b)

2 Pa

c)

5 Pa

d)

2.5 Pa

e)

20 Pa

25.

What force will be produced by a pressure of 100 N/m2 on an area of 4 m2

a)

400 N

b)

100 N

c)

25 N

d)

104 N

26.

Calculate the density of the cube.

a)

2 g/cm3

b)

4 g/cm3

c)

6 g/cm3

d)

8 g/cm3

27.
What is the density of a liquid that has a mass of 27g and a volume of 30ml?
a)
0.9 g/ml
b)
3 g/ml
c)
57 g/ml
d)
810 g/ml
28.

what is the volume of the cube?

a)

123

b)

144

c)

244

d)

150

29.
What is the volume of 150 grams of lead if it has a density of 11.3 g/cm3?
a)
13.3 g
b)
13.3 cm3
c)
.075 g
d)
1695 cm3
30.
If a block of wood has a density of 0.6 g/cm3 and a mass of 120 g, what is its volume?
a)
200 cm3
b)
0.005 cm3
c)
200.0 ml
d)
72 ml
31.
Find the density of a 2 cm x 2 cm x 2 cm cube with a mass of 64 g.
a)
6 cm3
b)
12 g/cm3
c)
128 g/cm3
d)
8  g/cm3
32.

Which substance is the most dense in this picture?

a)

Vegetable Oil

b)

Dish Soap

c)

Honey

d)

Corn Syrup

33.

What force will be produced by a pressure of 2 000 N/m2 on an area of 5 m2

a)

4000 N

b)

1000 N

c)

250 N

d)

10 000 N

34.

What force will be produced by a pressure of 100 N/m2 on an area of 4 m2

a)

400 N

b)

100 N

c)

25 N

d)

104 N

35.

What are two the two types of mixtures?

a)

elements

b)

compounds

c)

heterogenous

d)

homogenous

36.

A pure substances ________ be broken down into simpler matter using physical methods.

a)

sometimes

b)

can

c)

can not

37.

Why kind of mixture is this? All parts of the mixture are visible because they do not mix together.

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

38.

Why kind of mixture is this? Compounds cannot be distinguished from each other.

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

39.

Why kind of mixture is this?

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

40.

Why kind of mixture is this? (the sugar in the tea)

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

41.

Why kind of mixture is this?

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

42.

Why kind of mixture is this?

a)

Heterogeneous

b)

Homogenous

c)

Element

d)

Compound

43.
What is a mixture?
a)
A chemical combination of two or more different substances.
b)
A physical combination of two or more different substances.
c)
A chemically pure substance.
d)
A special type of solution
44.
What is a solution?
a)
A type of homogeneous mixture
b)
A type of heterogeneous mixture
c)
A type of suspension
d)
A type of colloid
45.
What is a colloid?
a)
A special type of solution
b)
A homogeneous mixture of  particles that can  be seen distributed in a substance   
c)
A heterogeneous mixture, in which the particles eventually settle out of a substance
d)
A heterogeneous mixture of very small particles (too small to be seen) distributed throughout another substance
46.
What type of mixture can you separate back into its original components?
a)
A solution
b)
A heterogeneous mixture
c)
A suspension
d)
 All of the above
47.

SEA WATER is an example of:

a)

solution

b)

colloid

48.

LEMONADE is an example of:

a)

solution

b)

colloid

49.

SMOKE is formed when solid particles of ash are suspended in the air. This is an example of a:

a)

solution

b)

colloid

50.

The "BEST MIXED" of all mixtures is

a)

colloid

b)

solution

c)

heterogeneous

d)

element

51.

Which is a colloid?

a)

Air

b)

Rice in water

c)

Fog

d)

Rain water

52.

Which one is a colloid?

a)

sea water

b)

air

c)

river water

d)

milk

53.

which one is a suspension?

a)

oil in water

b)

soapy water

c)

air

d)

brass

54.

Which is True?

a)

Suspensions do not settle

b)

suspension settle

c)

colloids settle

d)

Solutions settle

55.

Which of the following would result in being able to dissolve a greater amount of solid in a solution?

a)

Lower the temperature.

b)

Decrease the pressure of the solution.

c)

Increase the pressure of the solution.

d)

Heat the solution.

56.

Which one of these is considered a SOLUTE?

a)

Salt

b)

Water

c)

Salt Water

57.

What are the factors that affect solubility?

a)

rate of stirring

b)

particle size

c)

temperature

d)

all of these

58.
Stirring the solution increases or decreases the solubility?
a)
increases
b)
decreases
59.

What combination would dissolve a solid solute the fastest?

a)

high temperature, no stirring

b)

no heat, no stirring

c)

sugar cube, no heat

d)

high temperature, stirring

60.

Why do sugar particles dissolve faster in hot water?

a)

water particles move slow

b)

water particles move fast

c)

water particles settle down

d)

water particles stay on top

61.

Which of the following structures are not found in animal cells?

a)

Cell Membrane

b)

Cell Wall

c)

Nucleus

d)

Cytoplasm

62.
Which organelle is only found in a plant cell? 
a)
nucleus
b)
chloroplast
c)
mitochondria
d)
cell membrane
63.
The site of photosynthesis
a)
ribosome
b)
mitochondria
c)
chloroplast
d)
nucleus
64.
I am the outer most layer of an animal cell. What am I?
a)
cell wall
b)
nucleus
c)
cell membrane 
d)
cell skin
65.
The ___________ is the basic unit of life
a)
organ
b)
cell
c)
atom
d)
tissue
66.
Organs that work together to perform a related function is called _____________?
a)
cells
b)
tissues 
c)
organ system
d)
organs
67.
This is a example of........ 
a)
organ system
b)
cells
c)
organ
d)
tissue
68.
This is a example of ........
a)
cell
b)
organ system
c)
organ
d)
tissue
69.
The brain is a part of which organ system?
a)
nervous
b)
skeletal
c)
muscular
d)
digestive 
70.
A microscope is an instrument that.
a)
makes faraway objects look closer.
b)
makes small objects appear larger.
c)
decreases the size of small objects.
d)
increases the size of small objects.
71.
What is part 1?
a)
eye piece
b)
body tube
c)
arm
d)
coarse adjust
72.
What is the relationship between CELLS and TISSUES?
a)
The same kind of cells make up tissues.
b)
Tissues of the same kind form cells.
c)
The relationship is described in the cell theory.
d)
Different kinds of tissues make up cells.
73.
Which system exchanges oxygen and carbon dioxide between an organism and its environment?
a)
Circulatory
b)
Nervous
c)
Excretory
d)
Respiratory
74.
Which system processes information and regulates the body's response to internal and external stimuli?
a)
Excretory
b)
Nervous
c)
Muscular
d)
Skeletal
75.
Which choice below shows the order of organization in an animal from simplest to most complex?
a)
organ system, organ, tissue, cell
b)
cell, tissue, organ, organ system
c)
tissue, cell, organ system, organ
d)
tissue, cell, organ system, organ
76.
Jelly-like substance found inside cell that acts as a medium for chemical reactions within the cell
a)
Nuclear Membrane
b)
Golgi Body
c)
Cytoplasm
d)
Ribosome
77.
Which organelle is responsible for releasing the stored energy within the plant and animal cell. 
a)
Lysosomes
b)
mitochondria
c)
chloroplasts 
d)
vacuoles
78.
The process of breaking food into a form cells can use describes what system?
a)
skeletal system
b)
digestive system
c)
respiratory system
d)
circulatory system
79.
___________ are the building blocks of life.
a)
cells
b)
legos
c)
blocks
d)
blood
80.

What are unicellular organisms?

a)

Living things made of multiple cells

b)

Living things made of a single cell

c)

Living things made of two cells

d)

Living things made of three cells

81.
What is diffusion?
a)
when molecules move 
b)
when molecules move from a high concentration to a low.
c)
no movement 
d)
molecules move everywhere
82.

Which one of these is NOT one of the characteristics of living things?

a)

All living things drink water.

b)

All living things are composed of one or more cells.

c)

All living things grow, develop and have life spans.

d)

All living things reproduce.

83.

What is the function of the eyepiece in a compound microscope?

a)

To focus the image produced by the objective lens.

b)

To adjust the brightness of the image.

c)

To magnify the image produced by the objective lens and allow the viewer to see the magnified image.

d)

To hold the specimen in place for observation.

84.

Which part of a compound microscope controls the amount of light passing through the specimen?

a)

Stage

b)

Eyepiece

c)

Objective lens

d)

Diaphragm

85.

What is the purpose of the stage in a compound microscope?

a)

To adjust the focus of the microscope.

b)

To hold and support the specimen being observed.

c)

To control the intensity of the light source.

d)

To magnify the specimen being observed.

86.

Which part of a compound microscope is used to focus the image?

a)

condenser

b)

eyepiece

c)

stage

d)

objective lens

87.

What is the function of the objective lens in a compound microscope?

a)

The function of the objective lens is to rotate the specimen.

b)

The function of the objective lens is to illuminate the specimen.

c)

The function of the objective lens is to focus the light on the specimen.

d)

The function of the objective lens is to magnify the specimen.

88.

Which part of a compound microscope is used to switch between different objective lenses?

a)

eyepiece

b)

base

c)

nosepiece

d)

stage

89.

What is the purpose of the diaphragm in a compound microscope?

a)

To magnify the image of the specimen.

b)

To control the amount of light that passes through the specimen.

c)

To hold the specimen in place.

d)

To adjust the focus of the microscope.

90.

Which part of a compound microscope is used to hold and secure the slide?

a)

eyepiece

b)

stage

c)

base

d)

lens

91.

What is the function of the coarse adjustment knob in a compound microscope?

a)

The function of the coarse adjustment knob in a compound microscope is to rotate the stage.

b)

The function of the coarse adjustment knob in a compound microscope is to adjust the brightness of the light source.

c)

The function of the coarse adjustment knob in a compound microscope is to bring the specimen into rough focus.

d)

The function of the coarse adjustment knob in a compound microscope is to change the magnification of the objective lens.

92.

Which part of a compound microscope is used to view the magnified image?

a)

stage

b)

objective lens

c)

eyepiece

d)

nosepiece

93.

Which of the following shows the levels of organization in order from simple to complex?

a)

1. Cell

2. Tissue

3. Organ

4. Organ System

5. Organism

b)

1. Cell

2. Tissue

3. Organelle

4. Organ

5. Organ System

c)

1. Tissue

2. Organelle

3. Cell

4. Organ

5. Organism

d)

1. Organ

2. Tissue

3. Cell

4. Organism

5. Organ System

94.

Organs that work together are part of a(n) ________________________.

a)

cells

b)

tissue

c)

organ system

95.

What structures belong to the skeletal system? Be sure to choose the answer that contains all of the correct structures.

a)

Bones, muscles, stomach

b)

Ligaments, bones, muscles

c)

cartilage, spinal cord, nerves

d)

bones, ligaments, tendons

96.

Which group of structures belong to the circulatory system?

a)

heart, stomach, muscles

b)

blood, bones, ligaments

c)

kidneys, heart, blood

d)

blood, heart, blood vessels

97.

Which system removes excess water and waste from the blood?

a)

Integumentary system

b)

Endocrine system

c)

Excretory system

d)

Respiratory system

98.

Which organ system does the esophagus belong to?

a)

Excretory system

b)

Digestive system

c)

Endocrine system

d)

Nervous system

99.

Which system do the kidneys belong to?

a)

Endocrine system

b)

Excretory system

c)

Digestive sytsem

d)

Respiratory system

100.

Which system does the trachea belong to?

a)

Circulatory system

b)

Digestive system

c)

Skeletal system

d)

Respiratory system

101.

Which two words below complete the sentence: The function of the respiratory system is to bring in ____________ and get rid of _________________________.

a)

carbon dioxide, oxygen

b)

oxygen, carbon dioxide

c)

oxygen, nitrogen

d)

nitrogen, carbon dioxide

102.

Which system transports materials throughout the body?

a)

Respiratory system

b)

Circulatory system

c)

Muscular system

d)

Endocrine system

103.

How does the nervous system work?

a)

signals come only from the sense organs

b)

signals come only from the spinal cord

c)

signals travel along nerves to all the body organs

d)

signals come only from the brain

104.

Complete the sentences for the 4 main properties of light

a)

Light travels in a ________

1.

straight line

b)

Light can be _______

2.

reflected

c)

Light can _____

3.

bend

d)

 Light is _______

4.

a form of energy

105.

Define refraction of light.

a)

The reflection of light off a surface

b)

The bending of light as it passes from one medium to another.

c)

The absorption of light by a medium

d)

The emission of light from a source

106.
What can you see in a room that has no visible light?
a)
Only bright colored objects
b)
Only dark colored objects
c)
Only white objects
d)
Nothing at all
107.
What is this
a)
opaque
b)
transparent
c)
translucent
108.
The water is what
a)
opaque
b)
translucent
c)
transparent
109.
When ALL of the light is blocked
a)
translucent
b)
opaque
c)
transparent
110.
The bouncing off of light rays from the surface of an object such as a mirror or other shiny surface is called:
a)
mirror
b)
laser
c)
reflection
d)
refraction
111.

Light travels in ​ (a)   lines.​

Choose from the below words
straight
diagonal
wavy
zigzag
broken
112.
If a light ray is shown on a plane mirror with an angle of incidence of 45 degrees, what is the angle of reflection?
a)
15
b)
30
c)
45
d)
90
113.

Light is a form of

a)

food

b)

energy

c)

particles

d)

transformation

114.
_____ is a lens that is thicker in the middle.
a)
Convex
b)
Concave
115.
_____ is a lens that is thinner in the middle..
a)
Convex
b)
Concave
116.

This ray diagram is for which mirror?

a)

concave

b)

convex

c)

plane

d)

window

117.
The bending of waves as they pass from one substance into another.
a)
Reaction
b)
Reflection
c)
Refraction
d)
Repost
118.

Type of mirror that can produce an inverted image...

a)

Plane

b)

Convex

c)

Concave

119.

Type of mirror used as a side mirror on a vehicle to provide a wide angle view...

a)

Plane

b)

Convex

c)

Concave

120.

Type of mirror found in a bathroom...

a)

Plane

b)

Convex

c)

Concave

121.

Match the following

a)
1.

Convex Lens

b)
2.

Concave Lens

c)
3.

Plane Glass

122.

Which one of these is a convex lens?

a)
b)
c)

None of the above

123.
The ray of light that strikes a reflecting surface is called ________.
a)
incident ray
b)
reflected ray
c)
normal ray
d)
none of the above
124.
The imaginary line perpendicular to a reflecting surface is called _____.
a)
crooked line
b)
parallel line
c)
angular line
d)
normal line
125.

Glass has a _____________ density than air.

a)
Equal
b)
Greater
c)

Smaller

d)
Impossible to say
126.

The angle of reflection is

a)

90 degrees

b)

55 degrees

c)

45 degrees

d)

135 degrees

127.
The point where the rays meet is known as....
a)
Fire
b)
the focal point
c)
refraction
d)
Plane of the lens
128.

What color of light has the longest wavelength?

a)

red

b)

green

c)

yellow

d)

violet

129.

Why does this apple look red?

a)

The apple reflects red light and absorbs all other colors

b)

The apple absorbs red light and reflects all other colors

c)

The apple reflects all the light shinning on it

d)

The apple is red because we see that color.

130.

Electromagnetic waves that you can see

a)

radio waves

b)

visible light

c)

x-rays

d)

ultraviolet rays

131.

Complete the following analogy. RADIO WAVES : LONGEST WAVELENGTH :: ____________ : SHORTEST WAVELENGTH

a)

INFRARED LIGHT

b)

ULTRAVIOLET LIGHT

c)

X-RAYS

d)

GAMMA RAYS

132.

The distance between 2 crests or troughs. J on the diagram.

a)

wavelength

b)

amplitude

c)

frequency

d)

wave speed

133.
The picture here is an example of...
a)
artificial light called bioluminescence
b)
artificial light called chemiluminescence
c)
natural light called bioluminescence
d)
natural light called chemiluminescence
134.

Light travels in forms of _______________.

a)

Rays

b)

Waves

c)

Reflection

d)

Colours,

135.

What is NOT one of the 3 primary colors that make up white light?

a)

Red

b)

Green

c)

Blue

d)

Pink

136.

Match the part of the eye to the correct label

a)

Pupil

b)

Lens

c)

Retina

d)

Iris

e)

Cornea

f)

Optic nerve

1
2
3
4
5
6
1)
2)
3)
4)
5)
6)
137.
This part of the eye carries the message from your eye to the part of your brain that controls vision. 
a)
cornea
b)
lens
c)
optic nerve
d)
retina
138.
Controls how much light enters the eye by changes the size of the pupil. It is also the color part of your eye.
a)
iris
b)
cornea
c)
Retina
d)
pupil
139.
Photoreceptors that detect Color
a)
Cones
b)
Rods
140.
Photoreceptors that detect gray tones in low light
a)
Rods
b)
Cones
141.

Why does your pupil increase in size when you enter a dark room?

a)

To protect the eye

b)

to allow more light to enter the eye

c)

to allow less light to enter the eye

d)

to creep people out

142.
If you can see things close up clearly, but things that are far away are blurry, what are you? 
a)
blind
b)
near-sighted
c)
far-sighted
143.

An image with a low resolution is ​ (a)   compared to an image with a high resolution, which appears to be more​ (b)  

Choose from the below words
clear
silly
serious
blurry
144.
Mechanical advantage is a measure of how much a machine multiplies the input
a)
efficiency.
b)
force.
c)
power.
d)
work.
145.
Jeff is a landscaping contractor and lifts a rock weighing 600 pounds by wedging a board under the rock. Jeff weighs 150 pounds and puts all of his weight on the lever. How much mechanical advantage did the lever provide to Jeff in lifting the rock?
a)
0
b)
2
c)
4
d)
8
146.
Using a lever, Joe is able to lift a 10,000 N car off of the ground with a force of 1000 N. What is the mechanical advantage of the lever?
a)
1
b)
10
c)
100
d)
1000
147.

This 2000 N weight is raised 1 meter by pulling 4 meters of rope. What force was required to pull the rope?
a)
500 N
b)
1000 N
c)
2000 N
d)
8000 N
148.

A box of weight W is lifted by a force F using a lever as shown below.

What is the mechanical advantage of the lever (MA=Input Distance/Output Distance)?

a)

0.5

b)

2

c)

3

d)

6

149.
What is the mechanical advantage of this pulley system?
a)
2
b)
3
c)
4
d)
5
150.
In this illustration,
a)
the machine is decreasing mechanical advantage
b)
the machine is increasing mechanical advantage
c)
mechanical advantage is not changed
151.
To increase the mechanical advantage of a lever
a)
make sure the fulcrum is in the middle of the lever
b)
move the fulcrum closer to the load
c)
move the fulcrum closer to the effort
d)
use a bigger fulcrum
152.
An object being lifted or moved is a
a)
load
b)
fulcrum
c)
force
d)
work
153.
if a load of a lever is 100 newtons and the force you apply is 20 newtons, what is your mechanical advantage?
a)
120 N
b)
5 N
c)
2000 N
d)
80 N
154.

Match the following terms to the correct Simple Machines

a)

1.

Pulley

b)

2.

Wedge

c)

3.

Wheel & Axle

d)

4.

Lever

e)

5.

Inclined Plane

155.

What is the speed ratio if you push down 10m on a lever and the load is lifted 2 m?

a)

5

b)

10

c)

2

d)

1

156.

How does a single fixed pulley, like the one seen in the picture, help to lift a load?

a)

changes the direction of the force

b)

increases the amount of applied force

c)

decreases the amount of applied force

d)

allows you to pull the rope a shorter distance than the load moves

157.

Which of the following is the most effective way to decrease the effort force needed to push a box to the top of the ramp in the picture?

a)

cover the surface with carpet

b)

increase the length of the ramp

c)

increase the height of the ramp

d)

decrease the length of the ramp

158.

In reality, why is mechanical advantage less than speed ratio?

a)

Mechanical advantage is affected by friction; speed ratio is not.

b)

Speed ratio is affected by friction; mechanical advantage is not.

c)

Both are affected by friction.

d)

Neither are affected by friction.

159.

Speed ratio is NOT affected by friction.

a)

True

b)

False

160.

Which of the following has a mechanical advantage greater than 1?

a)

Hockey stick

b)

Bicycle

c)

Wheelchair Ramp

d)

Golf club

161.

Speed ratio and mechanical advantage are THEORETICALLY the same if you ignore friction.

a)

True

b)

False

162.
3. Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
163.
6. What kind of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
164.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
165.
For a lever to be a first class lever the fulcrum needs to be ..
a)
between the load and the effort
b)
on one side and the load and effort on the other side 
c)
on the same side as the load arm. 
166.

Two factors that determine work are...

a)

Force

b)

Mass

c)

Velocity

d)

Distance

167.

Units of force are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

168.

Units of work are...

a)

Newtons

b)

Grams

c)

Joules

d)

Meters

169.

If you push a cart with a force of 60 N for 2 m... how much work have you done?

a)

120 J

b)

30 J

c)

120 N

d)

30 N

170.

What is the formula for work?

a)

Force = work × distance

b)

Distance = force × work

c)

Work = force × distance

d)

Work = force × mass

171.

Solve 
F= ?
d= 25m
W=100 J


 

a)

4 N

b)

0.25 N

c)

2500 N

172.

Solve 
F= 40 N
d= ?
W= 5 J


 

a)

200 m

b)

0.125 m

c)

8 m

173.

Solve 
F= ?
d=10 m
W=20 J


 

a)

200 N

b)

0.5 N

c)

2 N

174.

What is the efficiency of a machine if 55.3 J of work is done on the machine by the person, but only 14.3 J is produced by the machine on the load?

a)

0.25 J

b)

26%

c)

386%

d)

3.86 J

175.

A 100 N container is placed on a lever, and the force you apply to lift the container is 20 newtons, what is your mechanical advantage?

a)

120 N

b)

5 N

c)

2000 N

d)

80 N

176.

What is the speed ratio if you push down 10m on a lever and the load is lifted 2 m?

a)

5

b)

10

c)

2

d)

1

177.

If 68 Joules were necessary to move a 4 N crate, how far was the crate moved?

a)

272 m

b)

17 m

c)

4.05 m

d)

272 cm 

178.

A boy pushes on a parked car with a force of 200 N. The car does not move. How much work was done by the boy on the car?

a)

200N

b)

200J

c)

0J

d)

0N

179.

4.What % of earth's water is fresh water ?

a)

5%

b)

3%

c)

70%

d)

1%

180.

6.What % of earth's water is in the ocean?

a)

70%

b)

85%

c)

90%

d)

97%

181.
The majority of FRESH LIQUID water on Earth is found
a)
In rivers
b)
In Lakes
c)
Underground
d)
Wetlands
182.

Why is fresh water a limited resource?

a)

It isn't because it is a renewable resource

b)

97% of water is in the oceans and too salty to drink.

c)

Only 2.5% is drinkable and is stored in icecaps, rivers, and lakes.

183.

Which of the following is a true statement about surface water?

a)

It makes up less than 1 percent of all water on Earth.

b)

Sluggish waters make natural lakes poor water sources.

c)

Drought conditions reduce the amount of surface water worldwide.

d)

All large cities use surface water as a water source.

184.

Most large cities get water for households and industries from:

a)

deep wells.

b)

pumps connected to springs.

c)

rivers and lakes.

d)

removing salt from sea water.

185.

What is an inexpensive solution to providing everyone with more fresh water to use?

a)

desalination

b)

water conservation

c)

drilling more wells into aquifers

d)

building more dams

186.
2/3 of freshwater on Earth is "locked away" in what water source location?
a)
atmosphere
b)
rivers and lakes
c)
underground
d)
ice and glaciers
187.
____________ is the water that collects in spaces and soil UNDERGROUND.
a)
Soil water
b)
Groundwater
c)
under pools
d)
ice caps
188.

Why is most of Earth's water not available to drink?

a)

It is contaminated.

b)

It is in the polar ice caps.

c)

It is underground.

d)

It has a high level of salinity.

189.

What percent of Earth's freshwater is available for humans to use?

a)

3

b)

less than 1

c)

97

d)

10

190.
This is another term for "drinking water".
a)
safe water
b)
potable water
c)
sweet water
d)
hot water
191.

What is salinity?

a)

The property of containing salt

b)

The amount of suspended solids

c)

Describes the condition of the water

d)

Describes how acidic or basic water is

192.

Gas exchange takes place in structures called:

a)

Alveoli

b)

Pulmonary Phalanges

c)

Uvula

d)

VanDer Moof Sacs

193.

Gas exchange in the lungs happened primarily by the process of:

a)

Diffusion

b)

Endocytosis

c)

Apoptosis

d)

Mycellium

194.

The tube that leads into the lungs is called the:

a)

Pharynx

b)

Larynx

c)

Pulmonary Phalanges

d)

Trachea

195.

Singled cells organisms perform gas exchange through:

a)

Diffusion

b)

Alveoli

c)

Pulmonary Phalanges

d)

Their skin

196.

The diaphragm contracts during

a)

Inhalation

b)

Exhalation

197.

Sound is made when air passes over flaps of cartilage in the

a)

Trachea

b)

Pharynx

c)

Larynx

d)

Glottis

198.

Small branches of tubes that pass through the lungs are called:

a)

Pulomonary Phalanges

b)

Bronchi

c)

Bronchioles

d)

Capillaries

199.
When you breathe, your lungs take in ___ and remove ___. 
a)
air/oxygen
b)
oxygen/carbon dioxide 
c)
carbon dioxide/waste 
d)
waste/air 
200.
Why does your body need to breathe out carbon dioxide?
a)
Without it, the lungs would not function.
b)
It can be harmful if it builds up in the bloodstream.
c)
You need it for your body to survive.
d)
It is delivered to the heart.
201.
What is the main organ in the respiratory system?
a)
Kidney
b)
Heart
c)
Lungs
d)
Diaphragm
202.
Oxygen from the air enters the blood stream at what location?
a)
Cardiac Notch
b)
Pulmonary Vein
c)
Alveoli
d)
Paranasal Sinuses
203.
What is the main function of the respiratory system?
a)
to provide oxygen and remove carbon dioxide from the body
b)
to bring oxygen to the body
c)
to break down food and absorb nutrients
d)
to remove oxygen from the body and deliver carbon dioxide
204.
The air sacs that are covered with capillaries where gas exchange takes place
a)
bronchi
b)
lungs
c)
oxygen
d)
alveoli
205.
Name the organ label # 6. 
a)
alveoli 
b)
bronchi 
c)
trachea 
d)
lungs 
206.
The beginning point of the respiratory system where air is taken into the body.
a)
lung
b)
diaphragm​
c)
nose​
d)
trachea​
207.

Digestion begins in the ______.

a)

Mouth

b)

Stomach

c)

Small intestine

d)

Gallbladder

208.

Saliva contains a carbohydrate enzyme called ___.

a)

Amylase

b)

Pepsin

c)

Lipase

d)

Maltase

209.

The chewed up food moves from the mouth to the stomach through the ___________.

a)

esophagus

b)

pancreas

c)

liver

d)

small intestine

210.
What organ is this?
a)
stomach
b)
large intestine
c)
small intestine
d)
esophagus
211.

Which digestive organ is represented by the letter B?

a)

Pancreas

b)

Liver

c)

Mouth

d)

Small intestine

212.

The majority of digestion occurs in the:

a)

mouth

b)

stomach

c)

small intestine

d)

large intestine

213.

Absorption of nutrients happens through small finger-like structures called ________.

a)

sphincters

b)

enzymes

c)

lipids

d)

villi

214.
What organ is this?
a)
stomach
b)
small intestine
c)
large intestine
d)
esophagus
215.

The diagram represents a portion of a human body. The principal function of structure X is to

a)

produce amylase

b)

produce pepsin

c)

absorb water

d)

absorb nutrients

216.

Which letter collects and stores wastes until they are ready to be released from the body?

a)

D

b)

E

c)

K

d)

L

217.

What are these structures call that are found on the lining of the small intestine?

a)

Gallbladder

b)

Villi

c)

Sphincter

d)

Duodenum

218.

Which is the esophagus?

a)

A

b)

B

c)

C

d)

D

e)

E

219.

Where would you expect to find acid?

a)
stomach
b)
small intestine
c)
liver
d)
large intestine
220.
What is the function of the digestive system?
a)

to break down food and absorb nutrients

b)
to support and protect our bodies
c)
to produce vitamin D
d)
to help us move
221.

Reorder the following. Put these in order that food follows as it passes through the digestive system.

a)

mouth

b)

esophagus

c)

stomach

d)

small intestine

e)

large intestine

1)
2)
3)
4)
5)
222.

The circulatory system revolves around which organ?

a)

heart

b)

lungs

c)

veins

d)

instestines

223.

Which type of blood vessel carries blood away from the heart?

a)

arteries

b)

ventricles

c)

aorta

d)

veins

224.

What is the Circulatory System also known as?

a)

cardiovascular system

b)

blood system

c)

vein system

d)

central system

225.

Which type of blood vessel carries blood TO the heart?

a)

arteries

b)

veins

c)

capillaries

226.
Which is a function of the cardiovascular system?
a)
to move water throughout the body
b)
to transport gases throughout the body 
c)
to eliminate waste from the body
d)
to provide structural support for the body 
227.
This type of vessel carries blood TO the heart:
a)
vein
b)
nerve
c)
muscle
d)
artery
228.
The cells in the blood that help fight germs and illnesses are the...
a)
red blood cells
b)
platelets
c)
white blood cells
d)
axons
229.

"C" is called ______

a)

Right atrium

b)

Left atrium

c)

Right ventricle

d)

Left ventricle

230.

"E" is called _________

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle

231.

"I" is called _______

a)

Left atrium

b)

Right atrium

c)

Left ventricle

d)

Right ventricle