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Thermal Energy

Total questions: 26

Worksheet time: 55mins

Name
Class
Date
1.

The ability to do work or cause change is called———-

a)

Strength

b)

Energy

c)

Superpower

d)

Temperature

2.
Energy...
a)
is the ability to do work or cause a change
b)
is all the movement in the universe
c)
cannot be created or destroyed
d)
all of the above
3.
What is kinetic energy?
a)
Thermal energy
b)
Nuclear energy
c)
Energy in motion
d)
Stored energy
4.
What is potential energy?
a)
Thermal energy
b)
Nuclear energy
c)
Energy in motion
d)
Stored energy
5.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
6.
The measure of average kinetic energy of all the particles within an object is called ____________. 
a)
temperature
b)
conduction
c)
radiation
d)
heat 
7.
As the kinetic energy of the molecules in a substance increases, the temperature of the substance __________.
a)
increases
b)
decreases
8.
What  is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ½mv
d)
m=QC
9.

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

a)

0.46 J/goC

b)

1.654 J/goC

c)

2,567,446.875 J/goC

10.

How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?

a)

298 Joules

b)

0.003 Joules

c)

297 J/g°C

d)

0.003 J/g°C

11.
If 200 grams of water is to be heated from 24.0° C to  100.0° C to make a cup of tea, what is the mass and what is the change in temperature?
a)
m=200g
∆t= 66
b)
m=200g
∆t=124
c)
m=200
∆t=100
d)
m=200g
∆t=76
12.
The movement of thermal energy from a warmer object to a cooler object is called:
a)
heat
b)
temperature
c)
motion
d)
momentum
13.
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
14.
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
15.
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.
16.
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
17.
Energy is measured in units called.....
a)
pounds
b)
meters
c)
horsepower
d)
joules
18.
While rubbing your hands together on a cold day, you use friction to trasnform
a)
thermal energy into nuclear energy
b)
nuclear energy into electrical energy
c)
mechanical energy into thermal energy
d)
mechanical energy into electrical
19.
The more particles an object has at a given temperature,
a)
the higher the temperature
b)
the more thermal energy it has
c)
the more degrees it has 
d)
the more Kelvins it has
20.
A material was cooled from 100ºC to 40ºC.  What is the temperature change?
a)
60ºC
b)
40ºC
c)
-60ºC
d)
-40ºC
21.

According to the table, which substance will feel hot more quickly?

a)

wood

b)

iron

c)

water

d)

carbon

22.

What is the change in thermal energy of a 20 kg wooden chair that warms from 200 C to 550 C. The specific heat of wood is 700 J/(kg.C).

a)

140,000 J

b)

210,000 J

c)

490,000 J

d)

1,090,800 J

23.

The air in a room has a mass of 72 kg and a specific heat of 1010 J/kg.C. What is change in thermal energy if the air warms from 150C to 300C?

a)

1,090,800 J

b)

210,000 J

c)

490,000 J

d)

1010 J

24.

The amount of heat needed to raise the temperature of 1kg of some material by 10C is called the ____ of the material.

a)

kinetic energy

b)

potential energy

c)

specific heat

d)

thermal process

25.
 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
26.
Analyze the data in the table. 
a)
   A.  All substances have the same melting points and boiling points.     
b)
some substances take longer to melt and boil.
c)
aluminum melts faster than water
d)
all substances do not have the same melting points and boiling points

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