Focus On Earth Science: California Grade 6

Chapter 3: Thermal Energy and Heat

Standards Assessment

1.
For conduction to occur from one material to another, the two materials must be _______. 3.c
A)in contact
B)fluids
C)at the same temperature
D)at the same height
2.
Why does conduction occur in materials? 3.c
A)Atoms move from one place to another in the material.
B)Atoms give off electromagnetic waves.
C)Atoms in the material collide with neighboring atoms.
D)Thermal expansion occurs when materials are heated.
3.
A convection current can occur if a fluid ______ when it is heated. 3.c
A)becomes more dense
B)becomes less dense
C)becomes a solid
D)gives off energy
4.
Which process can transfer thermal energy through space? 3.d
A)conduction
B)convection
C)friction
D)radiation
5.
When a match burns, chemical reactions occur that change _______ into other forms of energy. 3.b
A)thermal energy
B)chemical potential energy
C)friction
D)radiant energy
6.
In what direction does thermal energy always move? 3.a
A)from a warmer material to a cooler material
B)from a cooler material to a warmer material
C)from a higher material to a lower material
D)from a lower material to a higher material
7.
What can happen when a material absorbs electromagnetic waves? 3.d
A)Its mass can increase.
B)It moves more slowly.
C)Its temperature can increase.
D)It becomes a conductor.
8.
Energy that is transferred due to a difference in temperature is _______ energy. 3.a
A)thermal
B)radiant
C)kinetic
D)potential
9.
A car's engine converts which form of energy into thermal energy? 3.b
A)friction
B)kinetic energy
C)radiant energy
D)chemical potential energy
10.
Energy is transferred by radiation when an object absorbs _______. 3.d
A)gravitational potential energy
B)kinetic energy
C)electromagnetic waves
D)sound waves
11.
Why does convection occur in fluids, but not in solids? 3.c
A)The matter in fluids doesn't flow.
B)The matter in solids doesn't flow.
C)Solids are denser than fluids.
D)Solids are less dense than fluids.
12.
Which is the energy an object has because it is moving? 3.a
A)radiant
B)kinetic
C)thermal
D)potential
13.
_______ transfer energy without transferring matter. 3.a
A)Waves
B)Convection currents
C)Thermometers
D)Chemical bonds
14.
What causes kinetic energy to be changed into thermal energy? 3.b
A)fuel
B)work
C)friction
D)waves
15.
Which is a measure of the average kinetic energy of the particles in a material? 3.c
A)thermal energy
B)work
C)heat
D)temperature
Grade 6
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