Chapter 16

Objects that radiate relatively well, A) Absorb radiation relatively well B) reflect radiation relatively well C) Both of these D) neither of these

absorb radiation relatively well

A good heat conductor is A) a poor insulator. B) a good insulator. C) neither a poor nor a good insulator.

A) a poor insulator.

Hot water will cool to room temperature faster in a A) black pot. B) silver pot. C) depends more on the size of the pots than their color

A) black pot

The pupil of your eyes is a net A) absorber of radiant energy B) emitter of radiant energy

Absorbed of radiant energy

The higher the temperature of an object, the Longer the wavelengths its radiates Shorter the wavelengths its radiates

B

Cold water will warm to room temperature faster in a Black pot Silver pot Depends more on the size of the pots than their color

Black pot

If a solid object radiates more energy than it absorbs, its Internal energy decreases Temperature decreases Both of these Neither of these

Both of these

Warm air rises because faster moving molecules tend to move to regions of less Density Pressure Both of these

Both of these

A substance can absorb heat energy by the process of A) conduction B) radiation C) convection D) all of these

D) all of these

Energy transfer by convection is primarily restricted to Solids Liquids Gases Fluids None of these

Fluids

An object will normally be a net radiator of Nery when its temperature is A) higher than it surroundings B) lower than its surroundings C) neither of these .

Higher than its surroundings

Your feet feel warmer on a rug than on a tile floor because a rug Is usually warmer than tile Is a better insulating than tile For the same mass has more internal energy than tile All of these None of these

Is a better insulating than tile

At the same temperature, which move with the greater speed in the air? Very light molecules Heavier molecules All will have have equal average speeds

Very light molecules

Metals are both good heat conductors and also good electrical conductors because of the A) similarity between thermal and electrical conductive properties B) looseness of outer electrons in metal atoms C) relatively high densities of metals D) high elasticity of metals E) ability of metals to transfers energy easily

b) looseness of outer electrons in metal atoms