| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
Velocity and displacement are fully described by both a magnitude and a direction. Velocity and displacement are which of the following?
composite quantities |
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vector quantities |
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scalar quantities |
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combinational quantities |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)
What part of the food chain serves only as food for other organisms?
primary consumers |
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producers |
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decomposers |
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secondary consumers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
Which of the following is not a method of heat transfer?
convection |
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radiation |
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reflection |
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conduction |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
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small intestine |
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esophagus |
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large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
These clouds grow upward and can develop into cumulonimbus or thunderstorm clouds.
cirrus clouds |
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cumulus clouds |
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stratus clouds |
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nimbus clouds |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.