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