Energy Transfer Question Preview (ID: 30966)
Energy Transfer Review.
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What is the difference between the mechanical transfer and the thermal transfer of energy?
a) Thermal energy is when a warmer object touches a cooler object, mechanical energy is when objects push or pull on each other
b) Mechanical energy is when a warmer object touches a cooler object, thermal energy is when objects push or pull on each other
c) thermal energy is when an object steals cool air, while mechanical energy is when two objects pull against each other
d) Mechanical energy is when an object steals cool air, while thermal energy is when two objects pull on each other
How does the electromagnetic transfer of energy differ from the electrical transfer of energy?
a) Electrical energy is transferred through invisible waves, while electromagnetic energy is transferred through a circuit
b) Electromagnetic energy is transferred through invisible waves, while electrical energy is transferred through a circuit
c) Electrical energy comes from the sun, while electromagnetic energy comes from food
d) Electromagnetic energy comes from the sun, while electrical energy comes from food
In what way is conduction different from convection?
a) Conduction is heat transfer through invisible waves, while convection is heat transfer through visible waves
b) Convection is heat transfer through invisible waves, while conduction is heat transfer through visible waves
c) Heat is passed through conduction when two solid objects touch, and through convection when it moves through a liquid or gas
d) Heat is passed through convection when two solid objects touch, and through conduction when it moves through a liquid or gas
At which point does the transfer of heat from one object to another stall?
a) At the point in which one object overpowers another to steal all its heat
b) At the point in which one object overpowers another to steal its cool air
c) At the point in which both objects are at opposite ends of the UV index
d) At the point in which both objects are at equilibrium (equal balance)
What factors determine how much an object’s temperature increases when struck by light other electromagnetic waves?
a) the intensity of the light, how long it shines, and how much of it is absorbed
b) only the intensity of the light and how long it shines
c) only the length of time the light shines, and how much of it is absorbed
d) only the intensity of the light and how much of it absorbed
How is infrared light different from visible light?
a) infrared light is detected by the eye, while visible light is detected by its heating effect
b) infrared light is detected by its heating effect, while visible light is detected by the eye
c) visible light is detected when the sun is out, while infrared light is detected both during the day and the night
d) infrared light is detected when the sun is out, while visible light is detected both during the day and the night
How does ultraviolet light compare to visible light and infrared light?
a) Ultraviolet light is clearly seen, has longer wavelengths, and is responsible for damaging skin through sunburn
b) Ultraviolet light is not seen, has shorter wavelengths, and is responsible for protecting skin from the sun
c) Ultraviolet light is not seen, has shorter wavelengths, and is responsible for damaging skin through sunburn
d) Ultraviolet light is clearly seen, has longer wavelengths, and is responsible for protecting skin from the sun
What did scientists create to help people determine whether or not they are overexposed to harmful ultraviolet rays?
a) The Periodic Table
b) UV light
c) tanning beds
d) The UV index
Why are metals useful in cooking?
a) They are excellent conductors of heat
b) They are excellent insulators of heat.
c) They melt quickly
d) They are seldom used for anything other than cooking
Why are cooking utensils often made of materials such as rubber and plastic?
a) Rubber and plastic are conductors, and therefore limit the transfer of heat so that you do not get burned
b) Rubber and plastic are insulators, and therefore limit the transfer of heat so that you do not get burned
c) Rubber and plastic are common metals, that limit the transfer of heat so that you do not get burned
d) Rubber and plastic melt quickly which prevents the flow of heat to the hand of the cook
What is the purpose of installing expansion joint strips in bridges?
a) They allow the bridge to expand throughout all seasons of the year.
b) They allow for the bridge to expand in cold weather and contract in hot weather, thus preventing it from breaking
c) They allow for the bridge to expand in hot weather and contract in cold weather, thus preventing it from breaking
d) They allow the bridge to contract throughout all seasons of the year
What role do metals and non-metals play in the transfer of heat?
a) Most metals are excellent conductors, while most non-metals are poor insulators.
b) Most metals are poor conductors, while most non-metals are good insulators.
c) Most metals are excellent insulators, while most non-metals are good conductors
d) Most metals are excellent conductors, while most non-metals are good insulators.
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