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8th Grade Mid-Year Review

Total questions: 76

Worksheet time: 55mins

Name
Class
Date
1.

What is the renewable source that produces energy from the sun?

a)

Hydroelectric

b)

Solar

c)

Biomass

d)

Geothermal

2.
Fossil fuels are classified as nonrenewable because they.......
a)
require expensive equipment
b)
take millions of years to replace
c)
can be found all over 
d)
provide all the energy we use
3.

The unit for work is

a)

Newton (N)

b)

Pounds (lb)

c)

kilogram (kg)

d)

Joules (J)

4.

Energy can be transformed but cannot be created or destroyed

a)

Law of Conservation of Mass

b)

Law of Conservation of Energy

c)

Law of Conservation of Momentum

d)

Law of Conservation of Force

5.

When one form of energy changes into a new type of energy

a)

Energy Transfer

b)

Energy Alignment

c)

Energy Conversation

d)

Energy Transformation

6.

When energy moves from one object to another without changing form

a)

Energy Transfer

b)

Energy Conversation

c)

Energy Alignment

d)

Energy Transformation

7.

Coal, gas, & oil are examples of this

a)

renewable resources

b)

fossil fuels

c)

nuclear energy

d)

solar energy

8.

an energy resource that replaces itself as fast as/ faster than it is being used

a)

renewable resource

b)

nonrenewable resource

c)

fossil fuels

d)

nuclear energy

9.

an energy resource that is available in limited amounts/ being used faster than it is being replaced

a)

renewable resource

b)

nonrenewable resource

c)

fossil fuels

d)

nuclear energy

10.

Solar, wind, & hydroelectric energy are examples of

a)

nonrenewable resources

b)

renewable resources

c)

fossil fuels

d)

nuclear energy

11.

Fossil fuels & nuclear energy are examples of

a)

nonrenewable resources

b)

renewable resources

c)

life

d)

law of conservation of energy

12.

In all energy transformations, some energy is "lost" as

a)

chemical energy

b)

thermal (heat) energy

c)

nuclear energy

d)

mechanical energy

13.

Which resource uses the earth's heat to provide electric energy

a)

solar

b)

wind

c)

biomass

d)

geothermal

14.

Which resource uses falling/running to provide electric energy

a)

solar

b)

hydroelectric

c)

biomass

d)

geothermal

15.

Which resource uses the sun's radiant energy to provide electric energy

a)

solar

b)

hydroelectric

c)

biomass

d)

geothermal

16.

which energy resource uses uranium atoms to produce electricty?

a)

fossil fuels

b)

solar

c)

geothermal

d)

nuclear

17.

Which type of energy transformation occurs when we eat food?

a)

nuclear --> chemical

b)

chemical --> mechanical

c)

mechanical --> nuclear

d)

thermal --> mechanical

18.

Which type of energy transformation occurs when you play an instrument?

a)

mechanical --> radiant

b)

kinetic --> radiant

c)

mechanical --> sound

d)

nuclear --> chemical

19.
Which form of matter does not take the shape of its container?
a)
liquid
b)
gas
c)
solid
d)
air
20.

Particles of a liquid

a)

are tightly packed together and stay in a fixed position.

b)

are free to move around one another but still touch.

21.

The slower the particles in a substance move,

a)

the colder it is.

b)

the warmer it is.

c)

the more energy it has.

22.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma!!!

23.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

24.

What state of matter?

a)

Solid

b)

Liquid

c)

Gas

25.
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
26.

What is the phase change of a solid to a liquid?

a)

freezing

b)

melting

c)

boiling

d)

condensation

27.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
28.

Change from Liquid to Solid is called ...

a)

fusion

b)

Freezing

c)

sublimation

d)

evaporation

29.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
30.

Change from liquid to gas is called....

a)

expansion

b)

evaporation

c)

condensation

d)

sublimation

31.

What state/phase is the object likely from points A to B?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

32.

What is happening to the particles in the substance between points D and E?

a)

Melting

b)

Freezing

c)

Vaporizing

d)

Sublimating

33.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

34.
Are there molecules moving in a solid brick?
a)
yes
b)
no
c)
maybe
d)
not sure
35.

TRUE or FALSE: The particles in solids move around a lot and spread out.

a)

TRUE

b)

FALSE

36.

When changing a substance from liquid to solid, the energy has to...

a)

INCREASE

b)

DECREASE

37.

When changing a substance from liquid to gas, the energy has to...

a)

INCREASE

b)

DECREASE

38.

Which of the following statements is true about phase changes?

a)

Solid turning into liquid is called freezing

b)

When ice melts, the kinetic energy is decreased

c)

Liquid turning into gas is called condensing

d)

When water boils, the kinetic energy is increased

39.

Which of the following statements is true about solids?

a)

Particles do not move around much, but vibrate

b)

Particles have a lot of free space and spread out

c)

Solids have fixed shape but not volume.

d)

Particles are less closely packed than gas.

40.
Suppose you pour a glass of ice water and set it on the kitchen table. After a few minutes, the outside of the glass will be covered with drops of water. Why did this happen?
a)
Oxygen in the air cooled and condensed onto the cold glass.
b)
Water vapor in the air cooled and condensed onto the cold glass.
c)
Water vapor in the air cooled and evaporated onto the cold glass.
d)
Water seeped through pores in the glass.
41.

Which statement BEST describes the relationship between the weight and mass of an object?

a)

If mass increases, weight will decrease.

b)

Doubling mass reduces weight by half.

c)

An increase in mass will not affect weight.

d)

If mass increases, weight will increase.

42.

What happens to the mass and weight of an object that is launched into space, where the pull of gravity is less?

a)

The mass decreases while the weight stays constant.

b)

The mass stays constant while the weight decreases.

c)

The mass stays constant while the weight increases.

d)

The mass increases while the weight decreases.

43.

Jen is explaining the difference between weight and mass to her sister. In comparing the two, which of the following could Jen use to CORRECTLY describe the weight of an object?

a)

Weight is the same everywhere in space.

b)

Weight is how much matter is in an object.

c)

Weight is the amount of gravitational pull on an object.

d)

Weight is not impacted by the force of gravity.

44.
a)

303.4 g

b)

370.4 g

c)

373.0 g

d)

373.4 g

45.

Particles in motion have ___________ energy.

a)

thermal

b)

kinetic

c)

potential

d)

sound

46.

What type of thermal energy transfer is warming the man from the fire?

a)

Convection

b)

Conduction

c)

Radiation

d)

Heat

47.

What type of thermal energy transfer is occurring at point A?

a)

Radiation

b)

Convection

c)

Conduction

d)

None of the above

48.

What type of thermal energy transfer is occurring at point B?

a)

Convection

b)

Conduction

c)

Radiation

d)

Kinetic

49.

What type of thermal energy transfer is occurring at point C?

a)

Convection

b)

Conduction

c)

Radiation

d)

Heat

50.

What type of thermal energy transfer is occurring when you are warmed by the sun?

a)

Convection

b)

Conduction

c)

Radiation

d)

Solar

51.

Uneven heating and cooling of the Earth's surface forces the air to circulate in an attempt to find equilibrium or balance. This type of heat transfer is an example of ______.

a)

Convection

b)

Conduction

c)

Radiation

d)

Solar energy

52.

In this example, explain the movement of thermal energy in the glass.

a)

Heat is moving from the lemonade to the glass

b)

Heat is moving from the lemonade to the ice

c)

Cold is moving from the ice to the lemonade

d)

Cold is moving from the ice to the glass

53.

Thermal energy always moves from areas of ______ heat to areas of ______ heat.

a)

low -- high

b)

high -- low

c)

high -- high

d)

low -- low

54.

When matter moved from a solid to a liquid the molecules ____________.

a)

Expand and slow down

b)

Expand and become more dense

c)

Expand and speed up

d)

Contract and become more dense

55.

When matter goes from a gas to a liquid, the molecules ____________.

a)

Expand and slow down

b)

Contract and slow down

c)

Contract and speed up

d)

Expand and speed up

56.

What is the measurement of kinetic energy of molecules?

a)

Heat

b)

Thermal Energy

c)

Temperature

d)

Density

57.

Copper wire is a good example of a _____________.

a)

Conductor

b)

Insulator

c)

Metal

d)

Thermometer

58.

This Styrofoam cup is a good example of a _________.

a)

Conductor

b)

Insulator

c)

Drinking device

d)

Solid

59.
The amount of matter in an object is a measure of the object's ________________.
a)
volume
b)
density
c)
mass
d)
solubility
60.
What is the volume of the rock? The water level is displaced from 20 mL to 23 mL with the rock.
a)
3 mL
b)
23 mL
c)
20 mL
d)
43 mL
61.
A student added sugar to a cup of water and stirred with a spoon.  After 10 minutes you could not see the sugar anymore.  What happened to the sugar?
a)
the sugar evaporated
b)
the sugar dissolved
c)
the sugar was magnetic
62.

Heat transfers from an area of ____temperature to an area of ___ temperature. (Look at the diagram!)

a)
high to low
b)
low to high
c)
high to high
d)
It can travel high to low and low to high. 
63.

A characteristic of matter that can only be observed when matter is changed into a new kind of matter.

a)

Chemical property

b)

Physical property

64.

The words "blue", "large", and "soft" all describe _________.

a)

Chemical property

b)

Physical property

65.

The ability of matter to change when heated (like a new odor is smelled)

a)

Chemical property

b)

Physical property

66.

Rusting or tarnishing describes matter undergoing a __________ change with gases in the air.

a)

Chemical

b)

Physical

67.

Mass, volume, or density of an object is a _______________ of that object.

a)

Chemical property

b)

Physical property

68.

The ability to cook, burn, rust, tarnish, or explode is an example of a ___________ .

a)

Chemical property

b)

Physical property

69.

Solubility (when a substance dissolves)

a)

Chemical Property

b)

Physical Property

70.

Atoms of the reactants were rearranged to form different molecules to form the products

a)

Chemical Property

b)

Physical Property

71.

This property can be observed and measured without changing the matter being studied

a)

Physical Property

b)

Chemical Property

72.

This change is a

a)

chemical reaction

b)

physical change

c)

musical change

d)

Ice Ice baby

73.

How is a chemical change different from a physical change?

a)

there is no difference

b)

a physical change creates a new substance

c)

a chemical change creates a new substance

74.

A precipitate is a ___________ that forms when 2 liquids react together.

a)

solid

b)

liquid

c)

gas

d)

plasma

75.
Is spoiling food a physical or chemical change?
a)
phyiscal
b)
chemical
76.
Salt dissolves in water
a)
physical Change
b)
chemical change

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