Solids, Liquids, and Gases
Practice Test
1.
Bernoulli's principle states that as the velocity of a fluid __________, the pressure exerted by the fluid __________ .
a.
decreases; decreases
b.
decreases; increases
c.
increases; increases
d.
increases; decreases
Hint
2.
Above sea level, water boils at a __________ temperature due to the __________ atmospheric pressure.
a.
higher; decreased
b.
lower; increased
c.
lower; decreased
d.
higher; increased
Hint
3.
Pressure is defined as __________ .
a.
P1 = P2
b.
mass/acceleration
c.
force/area
d.
area/force
Hint
4.
Which of the following is a state of matter?
a.
thermal
b.
plasma
c.
particle
d.
diffuse
Hint
5.
__________ is the ability of a fluid to exert an upward force on an object immersed in it.
a.
Buoyancy
b.
Thermal expansion
c.
Viscosity
d.
Vaporization
Hint
6.
The __________ of a substance is the temperature at which a solid begins to liquefy.
a.
melting point
b.
boiling point
c.
heat of vaporization
d.
heat of fusion
Hint
7.
The SI unit of pressure is __________ .
a.
charles
b.
bernoulli
c.
boyle
d.
pascal
Hint
8.
According to Pascal, pressure applied to a fluid __________ .
a.
is transmitted unchanged throughout the fluid
b.
fluctuates as it is transmitted throughout the fluid
c.
decreases as it moves through the fluid
d.
increases as it moves through the fluid
Hint
9.
According to Boyle's law, at a constant temperature, if the volume of a container of gas is __________, then pressure of the gas will __________ .
a.
decreased; increase
b.
decreased; decrease
c.
increased; decrease
d.
increased; increase
Hint
10.
According to Charles's law, at a constant pressure, if the temperature of a gas __________, the volume __________ .
a.
decreases; decreases
b.
increases; increases
c.
decreases; increases
d.
increases; decreases
Hint
11.
Which of the following best describes particles in a solid?
a.
molecules slide past each other; sample takes shape of container
b.
particles tightly packed together
c.
fills whatever container it is in
d.
no attractive forces between particles
Hint
12.
The energy required to change a liquid to a gas is __________.
a.
heat of fusion
b.
boiling point
c.
heat of vaporization
d.
heat of sublimation
Hint
13.
An object weighing 50 kg is floating in a fluid. What is the buoyant force of the fluid on the object?
a.
Not enough information is given.
b.
< 50 kg
c.
50 kg
d.
> 50 kg
Hint
14.
A fluid's resistance to flow is its __________ .
a.
pressure
b.
buoyancy
c.
density
d.
viscosity
Hint
15.
__________ is an increase in the size of a substance when the temperature is increased.
a.
Buoyancy
b.
Thermal expansion
c.
Kinetic fusion
d.
Diffusion
Hint
16.
Why can people on one side of a room smell the scent of an air freshener sprayed on the opposite side?
a.
The molecules of air freshener have thermally expanded.
b.
The molecules of air freshener have diffused.
c.
The air pressure where the freshener was sprayed is greater than in the rest of the room.
d.
The molecules of air freshener are amorphous.
Hint
17.
The amount of energy needed to change a substance from a solid phase to a liquid phase is __________ .
a.
heat of vaporization
b.
heat of fusion
c.
melting point
d.
heat of transformation
Hint
18.
According to the kinetic theory, all matter is composed of __________.
a.
solid material
b.
plasma
c.
waves
d.
particles
Hint
19.
The supporting force exerted by a fluid on an object immersed in it is called __________ .
a.
buoyant force
b.
viscosity
c.
density
d.
lift
Hint
20.
What is the most common state of matter in the universe?
a.
liquid
b.
solid
c.
plasma
d.
gas
Hint
