Heat Transfer Answers
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The diagram shows the movement of magma due to convection currents.
A
the crustB
the mantleC
the outer coreD
the inner core2
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Which best describes a wave?
A
a collision of particlesB
a disturbance that carries energyC
a movement of fluidsD
a group of electrically charged molecules3
Which condition must exist in order for conduction to occur between two substances?
A
The molecules of the substances must be touching.B
Both substances must be the same temperature.C
At least one substance must be a liquid.D
Most of the molecules must be slow moving.4
Radiation occurs when energy is transferred by electromagnetic waves.
Answer not available
5
transferredchangedcreatedmeasured
A
transferredB
changedC
createdD
measured6
What are three properties of electromagnetic waves?
A
They travel slower than the speed of light, they include visible light waves, and they can transfer energy through empty space.B
They need matter through which to travel, they travel at the speed of light, and they include visible light waves.C
They travel at the speed of light, they include ultraviolet waves, and they can transfer energy through empty space.D
They include ultraviolet waves, they need matter through which to travel, and they travel slower than the speed of light.7
Selma made a diagram to compare convection and radiation.
A
Must involve temperature differences between substances or objectsB
Only occurs when molecules are in direct contactC
Involves the movement of fluids based on density differencesD
Can occur where there is little or no matter8
Thermal energy from the Sun travels to Earth by
A
conduction.B
charged molecules.C
electromagnetic waves.D
convection currents.9
Which is an example of radiation?
A
An ice pack is placed on a knee, and the knee cools down.B
A rock is warmed by an ultraviolet heat lamp.C
Hot coffee in a mug causes the mug to warm up.D
Cold salt water sinks to the bottom of the ocean.10
Which two conditions must exist in order for radiation to occur?
A
the presence of a solid, liquid, or gas and a temperature differenceB
direct contact of molecules and the presence of a solid, liquid, or gasC
the presence of electromagnetic waves and direct contact of moleculesD
a temperature difference and the presence of electromagnetic wavesDid you find these answers helpful?
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