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Thermal Energy & Heat

Total questions: 26

Worksheet time: 42mins

Name
Class
Date
1.
The transfer of energy by electromagnetic waves is called
a)
conduction
b)
convection
c)
radiation
d)
insulation
2.
The movement of thermal energy from a warmer object to a cooler object is called
a)
heat.
b)
temperature.
c)
motion.
d)
momentum.
3.
A material that conducts heat poorly is called a(n)
a)
insulator.
b)
conductor.
c)
metal.
d)
radiator.
4.
Heated air moves from baseboard heaters to the rest of a room in a process called
a)
conduction.
b)
convection.
c)
radiation.
d)
insulation.
5.
The more particles an object has at a given temperature,
a)
the higher its temperature.
b)
the more thermal energy it has.
c)
the more degrees it has.
d)
the more kelvins it has.
6.
The more particles a substance has at a given temperature, the more thermal energy it has
a)
True
b)
False
7.
Joints in train tracks are designed with extra space to allow for __________________ in hot weather.
a)
Conduction
b)
Insulation
c)
Thermal Energy
d)
Thermal Expansion
8.
The handle of a spoon in a bowl of hot soup becomes warm due to heat transfer by the process of ____________________.
a)
Convection
b)
Conduction
c)
Radiation
d)
All of the above
9.
Energy from the sun is transferred to Earth by the process of ____________________.
a)
Convection
b)
Conduction
c)
Radiation
d)
Thermal expansion
10.
When heat is transferred through the touching of two objects.
a)
Convection
b)
Conduction
c)
Radiation
11.

The total energy of all the particles in a substance is called

a)

temperature

b)

thermal energy

c)

degrees

d)

mass

12.

Heat transfer occurs

a)

in many directions

b)

both from warm objects to colder ones and from cold objects to warmer ones

c)

only from warm objects to colder ones

d)

only from cold objects to warmer ones

13.
What happens to particles as they heat up?
a)
They slow down
b)
Nothing
c)
They don't move
d)
They speed up
14.
What happens to particles as they cool down?
a)
They slow down
b)
Nothing
c)
They don't move
d)
They speed up
15.
As you touch a hot stove the heat transfers -
a)
from your hand to the stove
b)
from the stove to your hand
c)
It doesn't transfer
16.
Hot objects begin to cool as-
a)
cooler air is transferred to the hot object.
b)
thermal energy in the object is transferred to the surrounding air.
c)
atoms in the object react with the oxygen in the air.
d)
thermal energy in the object cancels out energy in the air
17.
Which sentence explains why a cold metal spoon placed in a pot of boiling water becomes hot?
a)
Thermal energy is transferred from the spoon to the water.
b)
Thermal energy is transferred from the water to the spoon.
c)
Thermal energy in the water is transformed into kinetic energy in the spoon.
d)
Thermal energy in the spoon is transformed into kinetic energy in the water.
18.

Which particles are moving fastest?

a)

Particles in ice.

b)

Particles in boiling water.

c)

Particles in water from the sink.

d)

Particles in steam.

19.
Which material is the best conductor of heat?
a)
glass
b)
styrofoam
c)
metal
d)
wood
20.

What is the BEST reason cooking pots are made out of the materials aluminum, copper, and sometimes glass?

a)

They are able to stop the flow of heat.

b)

They are good conductors of heat.

c)

They keep the same amount of heat.

d)

They are good insulators of heat.

21.
Which of the following is caused by heat energy?
a)
ice melting
b)
wet socks getting dry in a clothes dryer
c)
noodles cooking in a pot
d)
all of them are examples of heat energy
22.
Why does a metal lawn chair get hot in the sun when the grass sitting in the same sunlight remains cool to the touch?
a)
Heat travels easily through plants but not metals.
b)
Heat travels easily through both plants and metals.
c)
Heat travels easily through metal objects but not through plants.
23.
Object A is much larger than Object B, but both are made of the same material.  If both objects are at the same temperature, the thermal energy of Object A is THE SAME AS the thermal energy of Object B.
a)
True
b)
False
24.
When heat is absorbed by an object, the speed of the particles in the object IS UNCHANGED.
a)
True
b)
False
25.

How do you increase the kinetic energy of molecules?

a)

Decrease the temp

b)

change the energy input

c)

increase the thermal energy

d)

expand the molecules and increase the density

26.

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

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