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thermal energy

Total questions: 66

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

In convection, the cooler portions of the fluid rise while the warmer portions sink towards the bottom

a)

True

b)

False

2.

During a campout, Bob warms his hands by the campfire. This demonstrates ---

a)

radiation

b)

conduction

c)

convection

d)

condensation

3.

The measure of the average kinetic energy of the particles in an object is

a)

thermal equilibrium

b)

potential energy

c)

convection

d)

temperature

4.

By which process can thermal energy be transferred via electromagnetic waves, not requiring a medium to travel?

a)

convection

b)

conduction

c)

radiation

d)

thermal

5.

The temperature of a glass of cold water will eventually

a)

match the temperature of the surrounding environment

b)

become warmer than the surrounding environment

c)

always be colder than the surrounding environment

d)

never change temperature

6.

The amount of heat that is required to raise the temperature of 1 g of material by 1 degree is known as

a)

specific heat

b)

temperature

c)

energetic force

d)

radiant energy

7.

Materials that do not move heat well

a)

conductors

b)

radiation

c)

insulators

d)

metal

8.

There are three different temperature scales. Which one is not one of the three?

a)

kelvin

b)

celsius

c)

Fahrenheit

d)

absolute

9.

In a substance at a low temperature, the particles have _______ kinetic energy and movement

a)

equal

b)

high

c)

low

d)

no

10.

What material is the best conductor of heat?

a)

glass

b)

metal

c)

wood

d)

styrofoam

11.

What happens when you put ice in your drink to cool it down?

a)

The ice transfers coldness to the warmer drink

b)

Heat is transferred from ice to the drink

c)

Heat is transferred from the drink to the ice

d)

The ice cracks and releases cold air into the drink

12.

The temperature of a substance increases as

a)

the substance expands

b)

the substance's volume increases

c)

the substance's mass increases

d)

the average kinetic energy of its particles increases

13.

A metal spoon placed in a cup of hot cocoa become hot. Which process transfers heat from the bowl of the spoon to the handle?

a)

conduction

b)

convection

c)

evaporation

d)

radiation

14.

On the Fahrenheit scale, the boiling point of water is ______.

a)

212 degree Fahrenheit

b)

100 degrees Fahrenheit

c)

0 degrees Fahrenheit

d)

375 degrees Fahrenheit

15.

On the Celsius scale, the boiling point of water is _____?

a)

0

b)

32

c)

400

d)

100

16.

_____ is energy that is transferred between objects due to their temperature differences.

a)

Specific heat

b)

Heat

c)

Force

d)

Mass

17.
Conduction is heat transfer by -
a)
Touch
b)
Circles
c)
Waves
18.
Convection is heat transfer by-
a)
Touch an object
b)
The heating and cooling of a fluid
c)
Electromagnetic Waves
19.
When the 2nd story of a house is warmer than the 1st floor of a house is heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal equilibrium
20.
The sun warming your skin is an example of heat transfer through 
a)
conduction
b)
convection
c)
radiation
d)
thermal electricity
21.
Heat transfer always goes from-
a)
Cold to Hot
b)
Hot to Cold
c)
Heat doesn't transfer
d)
Freezing to Cold
22.
What happens to particles as they heat up?
a)
They slow down
b)
Nothing
c)
They don't move
d)
They speed up
23.
What happens to particles as they cool down?
a)
They slow down
b)
Nothing
c)
They don't move
d)
They speed up
24.

In the formula, which quantity represents the specific heat?

a)

c

b)

m

c)

Q

d)

deltaT

25.

The specific heat of copper is 0.385 J/g·°C. Which equation would you use to calculate the amount of heat needed to raise the temperature of 0.75 g of copper from 7°C to 29°C?

a)

Q = 0.385 J/g·°C x (29°C – 7°C)

b)

Q = 0.75 g x 0.385 J/g·°C x 29°C

c)

Q = 0.75 g x 0.385 J/g·°C x 22°C

d)

Q = 0.75 g x 0.385 J/g·°C x 7°C

26.

As the temperature of an object rises, so does the

a)

kinetic energy of the object.

b)

mass of the object.

c)

potential energy of the object.

d)

thermal energy of the object.

27.

Your friend tells you that sea water should have the same specific heat as water because both are water. You

decide to test whether this is true, and convince your parents that they need to take you to California so that

you can test it. You collect 5 kg of sea water, initially at room temperature (24°C). You input 200,000 J of

thermal energy to the sample, and the temperature rises to 34°C. What is the specific heat of sea water?

a)

4200 J/kg°C

b)

4000 J/kg°C

c)

3800 J/kg°C

d)

4400 J/kg°C

28.

What is the change in Thermal Energy if a 3 kg sample of copper, initally at 10 degrees C, ends at 0 degrees C?

a)

12000J

b)

-12000J

c)

20000J

d)

-20000J

29.

In the following example, identify the type of heat transfer.

You hold an ice cube in your hand and it begins to melt.

a)

Radiation

b)

Convection

c)

Conduction

30.

Material or substance that transfers heat easily

a)

Conductor

b)

Radiation

c)

Convection

d)

Insulator

31.

Convection occurs in

a)

liquids and gases

b)

solids

c)

none of these

32.

The total kinetic and potential energy of all particles in an object is called...

a)

mechanical energy

b)

kinetic energy

c)

potential energy

d)

thermal energy

33.

________ is the transfer of energy from one particle of matter to another within an object or between two objects in direct contact

a)

Conduction

b)

Convection

c)

Radiation

34.

Thermal energy (heat) always moves from a (1)_______ substance to a (2)_______ substance.

a)

(1) hot

(2) cold

b)

(1) cold

(2) hot

c)

(1) red

(2) blue

d)

(1) blue

(2) red

35.

Which of the following is true about a 5 gallon pot with 30 degree water in it and a 5 gallon pot with 50 degree water in it? Select all that apply.

a)

The second pot will have a greater thermal energy

b)

Both pots will have the same thermal energy

c)

The second pot has a higher temperature

d)

Both pots have the same temperature

36.

True or False: Two objects with the same temperature will have the same thermal energy.

a)

True

b)

False

37.

Convection occurs in

a)

liquids and gases

b)

solids

c)

none of these

38.

Which model is demonstrating what molecules in a solid look like.

a)
b)
c)
39.
What is the equation to measure change in Thermal Energy?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ∆mct
d)
m=QC
40.
20 g of water. specific heat of water is 4.18 J/g°C.  temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?
a)
418 Joules
b)
209 J
c)
83 J
d)
4.18 J
41.
The specific heat of aluminum is 0.21 cal/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?
a)
105 J
b)
10.5 J
c)
1.05 J
d)
50 J
42.

Which will heat up faster?

a)

copper

b)

granite

c)

iron

d)

basalt

43.

Which will heat up slower?

a)

water

b)

lead

c)

granite

d)

iron

44.

Which of the following best explains why the sand at the beach is hotter than the water?

a)

Sand has a higher specific heat than water.

b)

Sand has a lower specific heat than water.

c)

There is more water than sand at the beach.

d)

There is more sand than water at the beach.

45.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
46.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
47.
Warm air rises and the cool air sinks demonstrates this type of heat transfer. 
a)
conduction
b)
convection
c)
radiation
d)
Insolation 
48.
What type of heat transfer takes place in solids?
a)
Conduction
b)
Convection
c)
Radiation
49.
 How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22°C to 55°C, if the specific heat of aluminum is 0.90 J/gx°C?    
a)
297 Joules
b)
0.003 Joules
c)
297 J/gx°C
d)
0.003 J/gx°C
50.
The flow of thermal energy from warmer objects to cooler objects 
a)
Ice Cold
b)
Heater
c)
Heat
d)
Convection 
51.

What mixture enters through the intake valve?

a)

Water vapors and air

b)

Gasoline and air

c)

Water vapors and gasoline

52.

Name the four strokes of an internal combustion engine.

a)

Intake, conditioning, combustion, outake

b)

Intake, compression, combustion, exhaust

c)

Intake, compression, transmission, outake

d)

Intake, compression, conditioning, exhaust

53.

In the intake stroke, the piston moves up (towards the intake valve)

a)

True

b)

False

54.
 transfer of thermal energy in  a fluid by the movement of warmer and cooler fluid from one place to another.
a)
convection
b)
radiation
c)
themal insulator
d)
heat engine
e)
conduction
55.
 a material through which thermal energy moves slowly.
a)
conductor
b)
gas
c)
thermal insulator
d)
internal combustion engine
e)
solar collector
56.
device used in an active solar heating system that transforms radiant energy from the sun into thermal energy
a)
1st Law of Thermodynamics
b)
2nd law of thermodynamics
c)
heat engine
d)
solar collector
e)
internal combustion energy
57.
device that converts some thermal energy into mechanical energy.
a)
thermal insulator
b)
heat engine
c)
enegine
d)
internal combustion engine
e)
solar collector
58.
heat engine that burns fuel inside the engine in combustion or cylinders.
a)
thermal insulator
b)
heat engine
c)
heat
d)
internal combustion engine
e)
solar collector
59.

Thermal energy from inside transfers to the coolant, keeping the inside cold

a)

heating appliance

b)

thermostat

c)

refrigerator

d)

heat engine

60.

The automobile engine is an example of_____

a)

heating appliance

b)

thermostat

c)

refrigerator

d)

heat engine

61.

Coolant in a refrigerator moves _______ from the fridge to the air outside.

a)

water

b)

electric energy

c)

thermal energy

d)

electrons

62.
The process by which engine fuels burn is called ____. 
a)
combustion
b)
convection
c)
condensation
d)
conduction
63.

Which of the following would be the best insulator?

a)

Air

b)

Copper

c)

Silver

d)

Aluminum

64.

A temperature scale in which water freezes at 32 degrees and boils at 212 degrees.

a)

Celsius

b)

Fahrenheit

c)

Kelvin

d)

All of them

65.

a device that is not efficient

a)

heating appliance

b)

thermostat

c)

refrigerator

d)

heat engine

66.

The transfer of Energy the does NOT require matter is

a)

radiation

b)

conduction

c)

combustion

d)

convection

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