| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
Which of the following is not a medium for sound waves?
liquid |
|
vacuum |
|
none of these is a medium for sound waves |
|
solid |
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.
The large intestine does which of the following?
breaks down starches |
|
breaks down fats |
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processes the physical waste produced by digestion |
|
breaks down proteins |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
Which of the following temperatures is least like the others?
absolute zero |
|
0K |
|
32°F |
|
-273°C |
Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.
The energy posessed by a thrown baseball is an example of what kind of energy?
transitional |
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kinetic |
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gravitational |
|
potential |
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.
Which of the following states of matter exists at the highest temperature?
gas |
|
liquid |
|
none of these |
|
solid |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.