| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.21 |
| Score | 0% | 64% |
In the food chain, omnivores may be which of the following?
secondary consumers or scavengers |
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primary or secondary consumers |
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secondary or tertiary consumers |
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primary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
The energy posessed by a thrown baseball is an example of what kind of energy?
potential |
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kinetic |
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gravitational |
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transitional |
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.
In fermentation, what replaces oxygen in anaerobic respiration?
starches |
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ascorbic acid or peptides |
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lactic acid or alcohol |
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water |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
What type of cloud is responsible for fog?
cirrus |
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cumulonimbus |
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stratus |
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cumulus |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
A major difference between sound waves and light waves is which of the following?
a sound wave is much slower than a light wave |
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a sound wave cannot travel through a vacuum |
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a sound wave is mechanical while a light wave is electromagnetic |
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all of these are correct |
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.