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Thermal Energy & Heat Transfer

Total questions: 20

Worksheet time: 3570secs

Name
Class
Date
1.

The transfer of energy through molecules in direct contact is ...

a)

Heat

b)

Conduction

c)

Convection

d)

Radiation

2.
The flow of energy that occurs when a warm liquid or gas rises ..
a)
Heat
b)
Conduction
c)
Convection
d)
Radiation
3.
The transfer of energy by electromagnetic waves.
a)
Heat
b)
Conduction
c)
Convection
d)
Radiation
4.

As you touch a hot stove the heat transfers -

a)

from your hand to the stove by conduction.

b)

from the stove to your hand by conduction.

c)

from your hand to the stove by radiation.

d)

from the stove to your hand by radiation.

5.

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 by conduction

b)

Thermal energy is transferred from the water to the spoon by conduction.

c)

Thermal energy in the water is transformed into kinetic energy in the spoon by convection.

d)

Thermal energy in the spoon is transformed into kinetic energy in the water by convection.

6.
In a lava lamp, the warm part rises and the cool part sinks.  This is an example of 
a)
heat computation
b)
convection
c)
conduction
d)
radiation
7.
_________________ are observed in liquids and gases (air).
a)
convection currents
b)
radiation waves
c)
thermal conductivity
d)
conductors
8.
The movement of thermal energy from a region of _________________ temperature to a region of _____________________ temperature is called heat.
a)
higher, lower
b)
cooler, warmer
c)
lower, higher
d)
medium, medium
9.
The rubber that makes up the handle on the pan is considered a thermal ___________________ because thermal energy moves slowly through this material.
a)
conductor
b)
insulator
c)
regulator
d)
temperature
10.
Which example below is an example of conduction?
a)
Boiling macaroni
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
11.
Which example below is an example of convection?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
12.
Which example below is an example of radiation?
a)
Standing on a hot metal bridge
b)
The attic is warmer than the basement
c)
The Sun heating the Earth
d)
Touching hot sand with your feet
13.
True or false: Heat moves from the cooler object to a warmer object
a)
True
b)
False
14.

True or False?

Heat and temperature are different.

a)

True

b)

False

15.

As thermal energy increases, kinetic energy also...

a)

Increases

b)

Decreases

c)

Remains the same

16.
The diagram to the right shows a solid iron bar that is being heated in a flame. The primary method of heat transfer in the solid iron bar is—
a)
convection
b)
conduction
c)
absorption
d)
radiation
17.
What is the difference between heat and temperature?    
a)
a.  Temperature measures the motion of molecules, and heat is the energy of that motion
b)
b.  Temperature is measured by a thermometer, and heat is measured by a barometer
c)
c.  Heat is measured in calories, and temperature is measured in joules
d)
d.  Heat is caused by the sun, and temperature is caused by conditions in the atmosphere
18.
Why is there more thermal energy in an iceberg than in a pot of boiling water?    
a)
a.  The pot insulates the heated molecules
b)
b.  Most icebergs are fairly warm to the touch
c)
  c.  Icebergs contain many more molecules than pots of water
d)
  d.  Water does not hold heat very well
19.

What tool is used to measure temperature?

a)

a stove

b)

a beaker

c)

a thermometer

d)

a glove

20.

Metal objects heat up more slowly than plastic or wooden objects?

a)

True

b)

False

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