| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.63 |
| Score | 0% | 73% |
Which of the following is not a base unit in the metric system?
gram |
|
liter |
|
degree Fahrenheit |
|
meter |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
neutron |
|
atom |
|
electron |
|
proton |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
Which of the following is not a medium for sound waves?
liquid |
|
solid |
|
vacuum |
|
none of these is a medium for sound waves |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Earth's breathable air is held in which atmospheric layer?
thermosphere |
|
mesosphere |
|
stratosphere |
|
troposphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
Convert 0C° to F°.
-32 |
|
32 |
|
0 |
|
16 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(0) + 32\)
\(F° = 0 + 32 = 32\)