Physics: Ch. 15

The fact that desert sand is very hot in the day and very cold at night is evidence that sand has

a low specific heat

Consider a metal ring with a gap cut in it. When the ring is heated, the gap

becomes wider

Heart energy is measured in units of

choices A and B are both true A. joules B. calories

Consider a sample of water at 0 degrees C. If the temperature is slightly increased, the volume of the water

decreases

If glass expanded more than mercury, then the column of mercury in a mercury thermometer would rise when the temperature

decreases

When you touch a could piece of ice with your finger, energy flows

from your finger to the ice

The moderate temperatures of islands throughout the world has much to do with water's

high specific heat

Which of the following normally warms up fastest when heat is applied?

iron

Ice has a lower density than water because ice

is made of open-structured, hexagonal crystals

A substance that heats up relatively quickly has a

low specific heat

Ice tends to form first at the

surface of bodies of water

The white-hot sparks that strike your skin from a 4th-of-July type sparkler don't harm you because

the energy per molecules is high, but little energy is transferred because of the few molecules in the spark

Consider a closed, sealed can of air placed on a hot stove. The contained air undergoes an increase in

two of these B. pressure C. temperature

Which of the following expands when the temperature is lowered? Equal volumes of

water at 4 degrees C

During a very cold winter, water pipes sometimes burst. The reason for this is

water expands when freezing