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heat, temperature, and thermal energy

Total questions: 40

Worksheet time: 30mins

Name
Class
Date
1.
The movement of thermal energy from a warmer object to a cooler object is called:
a)
heat
b)
temperature
c)
motion
d)
momentum
2.
No more energy can be removed from matter at:
a)
its freezing point
b)
0°C
c)
absolute zero
d)
273 K
3.
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
4.
A measure of the average kinetic energy of the individual particles in an object is called:
a)
thermal energy
b)
conduction
c)
convection
d)
temperature
5.
When you touch something that feels cold, 
a)
heat from your hand moves into the cold substance.
b)
coldness moves from the cold substance into your hand.
c)
it melts.
d)
it freezes.
6.
Energy that moves particles of matter is 
a)
temperature
b)
thermal energy
c)
heat
d)
friction
7.
Why does a diver wear a wet suit?
a)
To keep in thermal energy.
b)
To keep from getting cuts.
c)
To keep from sinking.
d)
To keep out cold.
8.
The temperature of a substance increases as___.
a)
the substance expands
b)
the average kinetic energy of its particles increases
c)
the substance's volume increases
d)
the substance's mass increases
9.
You're holding hands with your best friend.  Your friend's hands are REALLY warm and yours are really cold.  After a few minutes, this has changed.  How might you explain what happened?
a)
The cold energy from your hand transferred to your friend's hand through conduction.
b)
The heat energy from your friend's hand transferred to your hand through conduction. 
c)
The cold energy from your hand transferred to your friend's hand through convection.
d)
The heat energy from your friend's hand transferred to your hand through convection.
10.

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

a)

one reaches a temperature of zero

b)

they both have an equal temperature

c)

one runs out of energy

11.

When a popsicle melts, the particles in the popsicle _____.

a)

gain thermal energy and speed up

b)

there are no particles in popsicles

c)

lose thermal energy and slow down

d)

stay the same

12.

Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?

a)

The molecules are moving faster in Diagram A

b)

The molecules are moving slower in Diagram A

c)

The molecules are moving at the same rate in both diagrams

13.
The Law of Conservation of Energy states:
a)
Energy can created or destroyed but not transformed 
b)
Energy cannot be created or destroyed, it can only transformed
c)
Energy can't be created, destroyed or transformed
14.
No more energy can be removed from matter at:
a)
its freezing point
b)
0°C
c)
absolute zero
d)
273 K
15.

Temperature is related to the average kinetic energy of the particles in an object due to their random motions through space.

a)

True

b)

False

16.

An increase in the volume of a material due to a temperature increase in the material.

a)

Thermal contraction

b)

Thermal expansion

c)

Thermal heat

17.

Heat transfer through conduction requires

a)

a liquid matter.

b)

matter in the form of a gas.

c)

contact with a solid material.

18.

The transfer of thermal energy when particles of a fluid move from one place to another is called

a)

conduction.

b)

convection.

c)

radiation.

19.

The transfer of energy by waves moving through space is called

a)

conduction.

b)

convection.

c)

radiation.

20.

Any material that conducts thermal energy poorly.

a)

thermal conductor

b)

thermal insulator

21.

The energy of motion is called

a)

kinetic energy.

b)

potential energy.

c)

thermal energy.

d)

work.

22.

Which of the following increases when an object becomes warmer?

a)

chemical energy

b)

elastic potential energy

c)

nuclear energy

d)

thermal energy

23.

Which of the following statements is true according to the law of conservation of energy?

a)

Energy cannot be created.

b)

Energy cannot be destroyed.

c)

Energy can be converted from one form to another.

d)

all of the above

24.

Which of the following is a unit of temperature?

a)

Celsius degree

b)

joule

c)

kilogram

d)

calorie

25.
Temperature is
a)
the transfer of energy from a warm object to a colder object
b)
scale used by most scientists
c)
a measure of how hot of cold something is compared to a refernece point.
d)
the type of heat transfer that occurs only in fluids.
26.

A student mixes a yellow powder with water. Which observation would prove a CHEMICAL change occurred?

a)

The powder DISSOLVED in the water

b)

The water turned the COLOR yellow

c)

The bag's TEMPERATURE changed

d)

The STATE OF MATTER changed

27.

Water is boiling on a stove, producing steam. What conclusion can you make about the change that is occurring?

a)

Boiling water bubbles indicate a chemical change

b)

Steam indicates a state of matter change

c)

Heat indicates a chemical change

d)

The clear color indicates a chemical change

28.

 

A _____________ contains a variety of elements and compounds that are not chemically combined with each other.

a)

compound

b)

element

c)

molecule

d)

mixture

29.

_______________ are mixtures in which its particles are too big to stay mixed without being stirred or shaken.

a)

Solvent

b)

Colloids

c)

Suspensions

d)

Solution

30.

Milk and gelatin are examples of

a)

Colloids

b)

Solutions

c)

Mixtures

d)

Solvents

31.

Air and tea are examples of

a)

Solutions

b)

Suspensions

c)

Pure substances

d)

Solvents

32.

A geologist finds a rock and breaks it into two pieces to examine the crystals inside. The two pieces of the rock are then labeled Sample A and Sample B. Sample A is twice as large as Sample B. Which of the following statements is true?

a)

Sample A is denser than Sample B.

b)

Sample B is denser than Sample A.

c)

Sample A and Sample B have the same density.

d)

Sample A and Sample B are both less dense than the original rock.

33.

Q = mcΔT

The air in the living room has a mass of 72 kg and a specific heat of 1010 J/kg℃. What is the change in energy of the air when it warms from 20 ℃  to 25℃

a)

363,600 J

b)

2.8056 J

c)

.083 J

d)

-363,600 J

34.

 D = m

  V

Determine the density of a 12-g object that has a volume of 19 cm3 

a)

228 g/cm3

b)

1.58 g/cm3

c)

.6316 g/cm3

35.

D = m

       V

A 18-gram gold star was placed into a graduated cylinder. The water level was measured at 35 mL and increased to 42 mL. Calculate the density of the object.

a)

2.57 g/mL

b)

.2368 g/mL

c)

126 g/mL

36.

Which is NOT an insulator.

a)

Wool

b)

Plastic

c)

Copper

d)

Glass

37.

True or false:

An insulator has low resistance

a)

True

b)

False

38.

Why does ice float?

a)

Liquid water is less dense than solid water.

b)

Solid water is less dense than liquid water.

c)

Gaseous water is less dense than solid water.

d)

Liquid water is less dense than gaseous water

39.

Why do some substances float on water?

a)

they are warmer than water

b)

they are cooler than water

c)

they are more dense than water

d)

they are less dense than water

40.

 

An internal combustion engine turns ____ into energy

a)

Water

b)

Fuel

c)

Air

d)

Oil

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