Multiple Choice Identify the
choice that best completes the statement or answers the question.
|
|
1.
|
A solid material exerts a pressure or force ____.
a. | in all directions | b. | downward only | c. | outward and
downward | d. | outward only |
|
|
2.
|
A liquid material exerts a pressure or force ____.
a. | in all directions | b. | downward only | c. | outward and
downward | d. | outward only |
|
|
3.
|
A vapor material exerts a pressure or force ____.
a. | in all directions | b. | downward only | c. | outward and
downward | d. | outward only |
|
|
4.
|
If the temperature remains constant and the volume that a gas occupies
increases, the pressure will ____.
a. | decrease | b. | increase | c. | remain the
same | d. | cannot be determined from the information given |
|
|
5.
|
The volume of gas varies inversely with the absolute pressure, provided the
temperature remains constant. This is called ____.
a. | Charles' Law | b. | Tom's Law | c. | Boyle's
Law | d. | Dalton's Law |
|
|
6.
|
At a constant pressure, the volume of a gas varies as to the absolute
temperature and at a constant volume the pressure of the gas varies directly with the absolute
temperature. This is known as ____.
a. | Charles' Law | b. | Tom's Law | c. | Boyle's
Law | d. | Dalton's Law |
|
|
7.
|
The total pressure of a confined mixture of gases is the sum of the pressures of
each of the gases in the mixture. This is known as ____.
a. | Charles' Law | b. | Tom's Law | c. | Boyle's
Law | d. | Dalton's Law |
|
|
8.
|
A helicopter is lifting an 800-pound unit at a rate of 200 feet per minute. How
many horsepower of work energy is the helicopter using in the process?
a. | 3.863 hp | b. | 4.517 hp | c. | 4.848
hp | d. | 5.209 hp |
|
|
9.
|
The unit used to measure electrical power is the ____.
a. | volt | b. | ampere | c. | watt | d. | ohm |
|
|
10.
|
One watt of electrical energy is equal to ____.
a. | 3.1416 Btu | b. | 3.413 Btu | c. | 3.3416
Btu | d. | 3.3146 Btu |
|
|
11.
|
How many watts of electrical power are equal to 1 horsepower?
|
True/False Indicate whether the
statement is true or false.
|
|
1.
|
Specific volume is the term used to indicate the space a weight of gas will
occupy.
|
|
2.
|
As heat is applied to a closed container containing a gas, the pressure inside
the container will decrease.
|
|
3.
|
An example of a fossil fuel is hydrogen.
|
|
4.
|
A law of conservation of energy states that energy is neither created nor
destroyed.
|
|
5.
|
Heat is a form of energy because of the motion of molecules.
|
Completion Complete each
statement.
|
|
1.
|
A material that occupies space and has mass is called
____________________.
|
|
2.
|
The three basic states of material are ____________________,
____________________, and ____________________.
|
|
3.
|
The law that states that "energy is neither created or destroyed, but can
be converted from one form to another" is called the ______________________________.
|
|
4.
|
Most of the energy we use comes from something we already have on Earth. The
only "new" energy we get comes from the ____________________.
|
|
5.
|
____________________ ft/lb of work is accomplished when an 800-lb. condensing
unit is lifted to the top of a 40 ft. building.
|
|
6.
|
One horsepower of work energy equals the amount of work done when lifting
____________________ pounds to the height of ____________________ foot in ____________________
minute.
|
|
7.
|
The unit of measurement of electrical power is the ____________________.
|
Short Answer
|
|
1.
|
One pound of ice at 20°F exerts its force downward. After absorbing 200
Btus, what direction(s) will the force be exerted? After absorbing 2000 Btus?
|
|
2.
|
Define an atom.
|
|
3.
|
Define a molecule.
|
|
4.
|
Define density.
|
|
5.
|
Define specific gravity.
|
|
6.
|
Define specific volume.
|
|
7.
|
Define power.
|
Matching
|
|
|
Match the gas law with its properties. a. | Boyle’s
law | b. | Charles' law | c. | Dalton's
law |
|
|
1.
|
V1 / T1 = V2 / T2
|
|
2.
|
PTOTAL = PSUBSTANCE 1 + PSUBSTANCE 2
|
|
3.
|
P1 x V1 = P2 x V2
|
|
|
Match the following terms with their proper units and/or
formulas. a. | specific volume | d. | density | b. | hp | e. | 1
kW | c. | specific gravity | f. | work |
|
|
4.
|
force X distance
|
|
5.
|
3413 Btu
|
|
6.
|
ft3/lb
|
|
7.
|
no units
|
|
8.
|
33000 ft-lb/min
|
|
9.
|
lb/ft3
|