| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
Absolute zero is which of the following?
the coldest temperature possible in the universe |
|
the freezing point of oxygen |
|
the freezing point of hydrogen |
|
0°C |
In contrast to the Celsius scale (measured in degrees centigrade) that fixes 0° at the freezing point of water and the Fahrenheit scale that uses 32°, the Kelvin scale fixes 0 at absolute zero (-273°C) which is the lowest temperature possible in the universe.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential |
|
gravitational |
|
inherent |
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kinetic |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
Convert 0C° to F°.
16 |
|
32 |
|
0 |
|
-32 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(0) + 32\)
\(F° = 0 + 32 = 32\)
Which of these does not contain oxygenated blood?
pulmonary vein |
|
left ventricle |
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right atrium |
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aorta |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
Which of the following is not a base unit in the metric system?
gram |
|
liter |
|
meter |
|
degree Fahrenheit |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.