Section 13.4
Solids
Practice Test
1.
Why is it important to take thermal expansion into account when building bridges?
a.
so the bridge materials don't deteriorate
b.
so the bridge materials can change state as the weather changes
c.
so the bridge will not move at all
d.
so the bridge materials expand and contract with the changes in weather
Hint
2.
In terms of the kinetic-molecular theory, why do substances expand when heated?
a.
The particles vibrate more and push other particles away.
b.
The particles vibrate more, causing air pressure to compress the substance.
c.
The particles on the surface vibrate faster.
d.
The particles vibrate less and push other particles away.
Hint
3.
What happens to a bimetallic strip when it is heated?
a.
it bends
b.
its cohesive properties decrease
c.
it becomes elastic
d.
it contracts
Hint
4.
If an iron bar expands 0.1 cm when heated 20°C, how much would it expand if it were heated 40°C?
a.
1 cm
b.
0.2 cm
c.
0.1 cm
d.
0.05 cm
Hint
5.
Amorphous solids have no __________.
a.
liquid phase
b.
crystalline pattern
c.
shape
d.
volume
Hint
6.
Which example demonstrates elasticity?
a.
a melted stick of butter
b.
a broken stick
c.
a bent iron bar
d.
a snapping rubber band
Hint
