14 terms

Physics Practice Questions - Chapter 15

from your finger to the ice
1) When you touch a cold piece of ice with your finger,
energy flows
A) from your finger to the ice.
B) from the ice to your finger.
C) actually, both ways.
3) Which of the following normally warms up fastest
when heat is applied?
A) water
B) iron
C) glass
D) wood
E) All of the above choices are equally true.
high specific heat
7) The moderate temperatures of islands throughout the
world has much to do with water's
A) poor conductivity.
B) vast supply of internal energy.
C) high specific heat.
D) high evaporation rate.
E) absorption of solar energy.
surface of bodies of water
12) Ice tends to form first at the
A) surface of bodies of water.
B) bottom of bodies of water.
C) surface or bottom depending on the water depth.
13) When an iron ring is heated, the hole becomes
A) smaller.
B) larger.
C) neither smaller nor larger.
D) either smaller or larger, depending on the ring
14) As a piece of metal with a hole in it cools, the
diameter of the hole
A) increases.
B) decreases.
C) remains the same.
copper expands more than iron
16) When a bimetallic bar made of copper and iron
strips is heated, the bar bends toward the iron strip. The
reason for this is
A) iron gets hotter before copper.
B) copper gets hotter before iron.
C) copper expands more than iron.
D) iron expands more than copper.
E) none of these
17) If glass expanded more than mercury, then the
column of mercury in a mercury thermometer would
rise when the temperature
A) increases.
B) decreases.
C) neither of these
24) Consider a sample of water at 0 degrees C. If the
temperature is slightly increased, the volume of the
A) increases.
B) decreases.
C) remains the same.
water expands when freezing
26) During a very cold winter, water pipes sometimes
burst. The reason for this is
A) the ground contracts when colder, pulling pipes
B) water expands when freezing.
C) water contracts when freezing.
D) the thawing process releases pressure on the pipes.
E) none of these
300 K
30) Room temperature on the Kelvin scale is about
A) 100 K.
B) 200 K.
C) 300 K.
D) 400 K.
E) more than 400 K.
high specific heats
33) Some molecules are able to absorb large amounts
of energy in the form of internal vibrations and
rotations. Materials composed of such molecules have
A) low specific heats.
B) high specific heats.
C) none of the above
less than 30 degrees C
39) Place a kilogram block of iron at 40 degrees C into
a kilogram of water at 20 degrees C and the final
temperature of the two becomes
A) less than 30 degrees C.
B) at or about 30 degrees C.
C) more than 30 degrees C.
becomes wider
42) Consider a metal ring with a gap cut in it. When the
ring is heated, the gap
A) becomes narrower.
B) becomes wider.
C) retains its size.