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8th Grade State Test Review

Total questions: 90

Worksheet time: 51mins

Name
Class
Date
1.

What is a example of lab safety?

a)

Keep your hair down

b)

Eat a snack before an experiment

c)

Keep your goggles on at all times

d)

Play around the equipment

2.

What is Newtons 3rd law?

a)

Everything has an equal an opposite reaction

b)

An object in motion stays in motion

c)

an object in rest stays in rest

d)

F=ma

3.

Where are fossils found?

a)

In Metamorphic rocks

b)

In Magma

c)

In Igneous rocks

d)

In Sedimentary rocks

4.

What is a Longitudinal Wave?

a)

A wave that vibrates the medium in the same direction in which the wave travels

b)

A wave that vibrates the medium at right angles, or perpendicular to the direction that the wave travels.

5.

_____________ are made up of more than one atom bonded together. They can be very simple or very complex.

a)

molecules

b)

atoms

c)

pure substances

d)

legos

6.

_________ are the basic units of matter that make up everything.

a)

molecules

b)

atoms

c)

pure substances

d)

legos

7.

In a solid, the molecules

a)

are widely spaced, move quickly (high energy), no definite volume or shape.

b)

are closely spaced, vibrate in place, definite volume and definite shape.

c)

are spread wider apart, in constant contact, medium amount of energy, have a definite volume but no definite shape.

8.

In a liquid, the molecules

a)

are widely spaced, move quickly (high energy), no definite volume or shape.

b)

are closely spaced, vibrate in place, definite volume and definite shape.

c)

are spread wider apart, in constant contact, medium amount of energy, have a definitevolume but no definite shape.

9.

In a gas, the molecules

a)

are widely spaced, move quickly (high energy), no definite volume or shape.

b)

are closely spaced, vibrate in place, definite volume and definite shape.

c)

are spread wider apart, in constant contact, medium amount of energy, have a definite volume but no definite shape.

10.

In order for a solid to melt, or change into a liquid, thermal (heat) energy must ___________.

a)

increase

b)

decrease

c)

stay the same

11.

When heat is added to molecules, the energy of the molecules in a substance

a)

increase

b)

decrease

c)

stay the same

12.

When heat is added to substance, the density of the substance

a)

increases

b)

decreases

c)

stays the same

13.

Volume, density, melting point, boiling point and freezing point are all examples of _______

a)

pure substances

b)

physical properties

c)

matter

d)

chemical properties

14.

Which of the following would describe a single Hydrogen atom?

a)

element

b)

compound

c)

molecule

d)

mass

15.

When visiting another planet in our solar system, which of the following properties would change?

a)

Mass

b)

Weight

c)

color

d)

taste

16.

The measurement of the force of gravity on an object is known as ________________.

a)

mass

b)

weight

c)

volume

d)

density

17.

The amount of matter an object contains is known as ___________________.

a)

volume

b)

density

c)

mass

d)

atom

18.

Which of the following shows heat being taken away from a substance?

a)

Solid ---> liquid ---> gas

b)

gas ---> liquid ---> solid

c)

mass ---> volume ---> density

19.

During a lab, you are given two substances to identify. They are white cubes of the same shape and size. Which of the following would be the best physical property to use to determine their identities

a)

density

b)

color

c)

shape

d)

taste

20.

In order to accurately measure volume using a graduated cylinder, you must read the amount at the bottom of the __________________________.

a)

line

b)

cylinder

c)

meniscus

d)

volume

21.

If you poured three liquids (that do not mix completely) into a beaker, how could you tell which one is the densest liquid?

a)

a. The liquid that is floating on top is the densest liquid.

b)

b. The liquid that settles to the bottom is the densest liquid

c)

c. The liquid with the deep red color is the densest liquid.

d)

d. There is no way to tell which liquid is densest from the description.

22.

Why is density considered an important characteristic in identifying elements?

a)

d. Density is measured in cm3/g.

b)

c. Density equals volume/mass.

c)

b. Each element has its own unique density.

d)

a. All elements have the same density.

23.
What does this picture represent? 
a)
solid
b)
liquid 
c)
gas
d)
plasma
24.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
25.
What does this picture represent? 
a)
solid
b)
liquid
c)
gas
d)
plasma
26.
The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
27.
My glass of ice water is sitting in the sun and has droplets of water on the outside of the glass. What is happening?
a)
condensation
b)
evaporation
c)
melting
d)
freezing
28.
Which state of matter has the highest kinetic energy? 
a)
solid
b)
liquid 
c)
gas
d)
matter
29.
The speed of the molecules determines the _____.
a)
volume
b)
density
c)
pressure
d)
temperature
30.
What is the chemical formula for water?
a)
H2O
b)
H + H + O
c)
HO2
d)
Hydrogen and Oxygen
31.
What does the Conservation of Mass mean?
a)
Matter cannot be created or destroyed, only transformed.
b)
Matter cannot be transformed.
c)
You can only create as much matter as you destroy.
32.
What is a characteristic of matter that can be measured or observed without changing matter into something new?
a)
matter
b)
molecule
c)
physical property
d)
states of matter
33.
Positive particles found in an atom are called...
a)
protons 
b)
electrons 
c)
neutrons 
d)
nucleus 
34.
The negatively charged particles of an atom are called...
a)
protons 
b)
electrons 
c)
neutrons 
d)
nucleus 
35.
This is an example of a...
a)
chemical symbol 
b)
chemical sign 
c)
chemical location 
d)
chemical formula 
36.
_________________ are the elements and compounds that react, or you start with, in a chemical reaction. 
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
37.
Which of the following could indicate a chemical change? 
a)
All of the answers could indicate Chemical Change 
b)
a color change has occurred 
c)
bubbles appear 
d)
creation of one or more new chemical products 
38.
 Which is NOT an example of chemical change?
a)
production of gas.
b)
change in color.
c)
change in size.
d)
transfer of energy.
39.
A copper penny turning greenish after a few years is an example of...
a)
Chemical Change
b)
Physical Change
40.
Which of the following IS a chemical change
a)
using chalk
b)
water freezing
c)
slicing cheese
d)
digestion
41.
What does the 6 represent in this image?
a)
Atomic mass
b)
atomic number
c)
chemical symbol
d)
element name
42.
What does the C represent in this image?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
43.
Krypton's atomic number is 36, it has an atomic mass of 84, how many neutrons does it have?
a)
120
b)
48
c)
36
d)
84
44.
How many atoms are in this molecule:
H2SO4
a)
3
b)
6
c)
7
d)
4
45.
Which of these is NOT a state of matter?
a)
Solid
b)
Water
c)
Gas
d)
Liquid
46.
What is mass?
a)
The amount of space something takes up
b)
The amount of sound something makes
c)
The amount of matter in something
47.
Which of these is NOT a conductor?
a)
Iron
b)
A spoon
c)
Glass
d)
A penny
48.
What is an insulator good at doing?
a)
Preventing electricity from moving
b)
Allowing electricity to move
c)
Making electricity move quickly
49.
What is a magnet?
a)
Any u-shaped object
b)
Any piece of metal
c)
Something that has magnetic forces
d)
Something that pulls on plastic
50.
What is solubility?
a)
The ability to become invisible
b)
The ability to solve a problem
c)
The ability to dissolve
d)
The ability to break apart
51.
What is a mixture?
a)
2 or more objects put together
b)
A bunch of the same object
c)
Objects stirred together
52.
What is a solution?
a)
Water in a cup
b)
A mixture that is evenly mixed
c)
A mixture that has been separated
53.
For waves in any medium, as the wavelength decreases, what happens to the frequency?
a)
It also decrease
b)
It stays the same
c)
It increases
54.
How much of the electromagnetic spectrum is made up of visible light?
a)
only a small portion
b)
a very l;arge portion
c)
about half
55.
Which way of communicating will NOT work for astronauts in outer space?
a)
ringing a bell
b)
flashing a light
c)
using a radio
d)
waving a hand
56.
What causes sound?
a)
something vibrating
b)
a part of a car
c)
an object moving through the air
d)
light energy
57.
Reflection occurs when...
a)
light bends
b)
light shines in your eyes
c)
light goes through a surface
d)
light strikes a surface and bounces back
58.
Which of these processes does the picture illustrate?
a)
reflection
b)
refraction
c)
absorption
d)
scattering
59.
You stand in front of your friend. Why can't people see your friend behind you?
a)
You are transparent.
b)
You are translucent.
c)
You are opaque. 
d)
You are concave. 
60.
Which of the following correctly states the law of conservation of energy?
a)
Energy can be created and destroyed.
b)
Energy can be created but not destroyed.
c)
Energy cannot be created or destroyed.
d)
Energy cannot be created but it can be destroyed.
61.
Describe the energy in this picture.
a)
Potential
b)
Kinetic
c)
Potential and Kinetic
d)
The slinky has no energy.
62.
Describe the energy in this picture.
a)
Gravitational Potential
b)
Kinetic
c)
Elastic Potential
d)
No Energy
63.
What word best describes potential energy?
a)
Stored
b)
Motion
64.
Describe the energy at Position B.
a)
High Potential
b)
Low Kinetic
c)
High Kinetic
d)
Equal Potential and Kinetic
65.
When plants convert the sun's energy into food, which type of energy is it?
a)
kinetic
b)
chemical
c)
thermal
d)
radiant
66.
What kind of energy is represented in this picture?
a)
Thermal
b)
Potential
c)
Nuclear
d)
Mechanical
67.
What kind of energy does this device use?
a)
Chemical
b)
Electrical
c)
Thermal
d)
Chemical
68.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
69.
Work is:
a)
A transfer of energy by a force to move and object
b)
Something you get paid for
c)
Something you take home
d)
Makes you sweat
70.
Energy that comes from the nucleus of an atom. A form of potential energy.
a)
chemical energy
b)
Nuclear energy
c)
Sound energy
d)
Electrical energy
71.
A _____ is a pull or a push.
a)
force
b)
friction
c)
gravity
d)
speed
72.
When you type on the keys of your Chromebook you are using a
a)
pull
b)
push
c)
gravity
d)
friction
73.
Why is there less friction between two ice cubes touching than between sandpaper on wood?
a)
They have rough surfaces.
b)
They have loud surfaces.
c)
They have smooth surfaces.
d)
They have bright surfaces.
74.
What keeps the Moon in orbit around Earth?
a)
Earth's rotation.
b)
Earth's atmosphere.
c)
Earth's gravity.
d)
Earth's shape.
75.
A north pole and a south pole will attract.
a)
True
b)
False
76.
A cell's control center that directs all of the activities that take place in the cell is the
a)
Chromosome
b)
Vacuole
c)
Nucleus
d)
Mitochondria
77.
How are organisms organized?
a)
Organism-Cell-Organ-Tissue-Organ System-
b)
Organism-Organ System-Organ-Tissue-Cell
c)
Tissue-Organ-Organ System- Organism-Cell
d)
Cell-Tissue-Organ-Organ System-Organism
78.
Which of these are not found in animal cells?
a)
Chloroplasts & organelles
b)
DNA & mitochondria
c)
Cell Wall & Cell Membrane
d)
Cell Wall & Chloroplasts
79.
What is mitosis?
a)
A process when cells divide to produce 2 daughter cells.
b)
A process where the body produces more body cells.
c)
A process where the body will growth, repair and regenerate itself.
d)
All of the Above
80.

_____________ refers to all the different kinds of living organisms within a given area.

a)

Biodiversity

b)

Biology

c)

Biome

d)

Ecology

81.

Herbivores only gain their energy by consuming animals.

a)

True

b)

False

82.

A(n) _________ is a unit of energy in the form of heat (joules).

a)

carbohydrate

b)

sugar cube

c)

calorie

d)

kilowatt

83.

Which organism has the most energy stored in their cells?

a)

Grass and Wildflowers

b)

Mouse

c)

Snake

d)

Hawk

84.
Organisms that are classified as autotrophic are able to-
a)
be seen with the human eye
b)
move
c)
reproduce
d)
make their own food
85.
What tool do you use to view the cells?
a)
metric ruler
b)
centrifuge
c)
microscope
d)
pipette
86.
What organelle is called the "powerhouse" of a cell?

a)
Endoplasmic Reticulum
b)
Nucleus
c)
Mitochondria
d)
Nucleolus
87.
The man who studied genetics and came up with genetics is
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
88.

A rock made of magma that cools inside the Earth and contains large crystals?

a)

Igneous

b)

Sedimentary

c)

Metamorphic

d)

Magma

89.

A rock that contains pieces of shells and fossils compacted and cemented together over time is...

a)

Sedimentary

b)

Igneous

c)

Metamorphic

d)

Sediments

90.

The rock that forms by heat and pressure deep under ground?

a)

Igneous

b)

Sedimentary

c)

Metamorphic

d)

Lava

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