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Science 7 Heat and Temperature Unit exam

Total questions: 40

Worksheet time: 39mins

Name
Class
Date
1.
When temperature goes up, what happens to volume?
a)

Volume goes up

b)

Volume goes down

c)

Temperature goes down

d)

Volume stays the same

2.

What is thermal energy?

a)

Wind

b)

Heat

c)

Electricity

d)

Chemical

3.

What is absolute zero?

a)

The freezing point of water.

b)

The lowest number on a thermometer.

c)

The boiling point of water.

d)

The coldest possible temperature.

4.

What is the ideal human body temperature?

a)

32 degrees

b)

39 degrees

c)

37 degrees

d)

30 degrees

5.

Which of the following is NOT one of the measuring devices discussed in class?

a)

Thermowave Meter

b)

Bimetallic Strip

c)

Thermocouple

d)

Infrared Thermogram

6.

What temperature is absolute zero?

a)

-273 C or 0 K

b)

0 C or 100 K

c)

-500 C or 100 K

d)

-200 C or 0 K

7.

Which measure device would be used to control a furnace, air conditioner, oven, or refrigerator?

a)

Infrared Thermogram

b)

Thermocouple

c)

Recording Thermometer

d)

Bimetallic Strip

8.

What measuring device would be used to measure temperature change over a long period of time?

a)

Infrared Thermogram

b)

Bimetallic Strip

c)

Thermocouple

d)

Recording Thermometer

9.

What measuring device would be used to measure extremely high temperatures?

a)

Infrared Thermogram

b)

Thermocouple

c)

Bimetallic Strip

d)

Recording Thermometer

10.

A fireplace warming the air in the room is and example of this type of heat transfer?

a)

conduction

b)

convection

c)

radiation

d)

transformation

11.

At room temperature water is a liquid. How could the water be changed to a solid?

a)

add heat

b)

remove heat

c)

decrease density

d)

increase density

12.

A lava lamp has cool globs of stuff that float up and down because of what?

a)

conduction

b)

convection

c)

radiation

d)

coolness

13.

When I drink coffee in the morning, I warm my hands on the mug by what type of heat transfer?

a)

conduction

b)

convection

c)

radiation

d)

coziness

14.

When I cook bacon, it touches the pan. It is cooked because

a)

heat transfers from the pan to the bacon through convection

b)

heat transfers from the pan to the bacon through conduction

c)

heat transfers from the bacon to the pan through conduction

d)

heat is transferred as energy

15.

Which type of heat transfer travels through empty space and does need a state of matter?

a)

conduction

b)

convection

c)

radiation

d)

waves

16.
What is the BEST example of a conductor? 
a)
A wooden block
b)
A ceramic mug
c)
A glass cup
d)
A metal bowl
17.
Why does warm air rise and cool air sink?
a)
Warm air is less dense than cooler air.
b)
Warm air is more dense than cooler air.
c)
Warm air weighs less than cooler air.
d)
Warm air weighs more than cooler air. 
18.
An example of a renewable resource
a)
wind
b)
coal
c)
nuclear
d)
natural gas
19.
A device that controls the temperature in your house is called a
a)
thermometer
b)
cogeneration
c)
thermostat
d)
refrigerant
20.
A system that reduces wasted heat by creating heat and electricity at the same time
a)

local heating

b)

passive solar

c)

wind energy

d)

cogeneration

21.
Is this active or passive solar?
a)
active
b)
passive
c)
neither
22.
This is an example of 
a)
convection
b)
conduction
c)
radiation
d)
none of the above
23.
Thermal energy is
a)
measure of how hot or cold matter is.
b)
the total kinetic energy of all the particles the substance contains.
c)
the energy that transfers from one substance to another because of differences in kinetic energy.
d)
The number of particles in a substance
24.
Energy produced by a dam on a river is 
a)
wind
b)
hydroelectric
c)
solar
d)
nuclear
25.

Temperature at which a substance changes from solid state to a liquid state.

a)

Freezing Point

b)

R-value

c)

Melting Point

d)

Cogeneration

26.

Temperature at which a substance changes from liquid state to gas state.

a)

Boiling Point

b)

Freezing Point

c)

Melting Point

d)

Particle Model of Matter

27.

A measurement of the average kinetic energy of the particles in a substance.

a)

Heat Energy

b)

Temperature

c)

Conduction

d)

Infrared Waves

28.

Total kinetic energy of the particles in a substance.

a)

Thermal Energy

b)

Heat

c)

Thermal Expansion

d)

Radiation

29.
Molecules are tightly packed together
a)
solid
b)
liquid
c)
gas
30.
Molecules spread out and move FAST!
a)
solid
b)
gas
c)
liquid
31.

What is room temperature?

a)

35-40 C

b)

20-25 C

c)

40 -45 C

d)

0 -5 C

32.

Which can is a better heat absorber and radiator

a)

The dark can

b)

The white can

33.

What are nonrenewable resources?

a)

energy sources that are replaced faster than they are used

b)

energy sources that can never be replaced or are replaced more slowly than they are used

c)

a natural product that can be changed into other forms of energy to do work

34.

Name two disadvantages to using fossil fuels.

a)

pollution and non-renewable

b)

renewable and clean energy

35.

A substance that has fixed volume and fixed shape is a _______.

a)

Solid

b)

Liquid

c)

Gas

36.

Has no fixed volume or shape is a ______.

a)

Solid

b)

Liquid

c)

Gas

37.

What is the process called when a gas becomes a liquid?

a)

Melting

b)

Boiling

c)

Evaporation

d)

Condensation

38.

What is the temperature of absolute zero in Celsius?

a)

-273.15°C

b)

-100°C

c)

0°C

d)

-50°C

39.

What change of state is represented in the picture?

a)

Melting

b)

Boiling

c)

Condensation

d)

Solidifying

40.
Which description best describes what a particle model shows?
a)
How many particles are in a solid, liquid or gas.
b)
How the particles in a solid, liquid or gas are arranged. 
c)
If there are any particles in a solid liquid or gas. 

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