| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
Which of the following is not true of light waves?
are mechanical waves |
|
travel faster than sound waves |
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can travel through a vacuum |
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are electromagnetic waves |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.
Which of these is not a type of fat?
saturated |
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polyunsaturated |
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cholesterol |
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monounsaturated |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils).
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
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esophagus |
|
small intestine |
|
stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Examples of tertiary consumers include:
cows |
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chickens |
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sharks |
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fish |
Tertiary consumers eat primary consumers and secondary consumers and are typically carnivorous predators. Tertiary consumers may also be omnivores. Examples include wolves, sharks, and human beings.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
potential |
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inherent |
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gravitational |
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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.