| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
A biological community of interacting organisms and their physical environment is known as:
population |
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community |
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biome |
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ecosystem |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).
Which of the following is not a method of heat transfer?
radiation |
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conduction |
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convection |
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reflection |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
Convert -20C° to F°.
78 |
|
-4 |
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36 |
|
-36 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)
__________ is caused by a lack of Vitamin C.
shingles |
|
scurvy |
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diabetes |
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anemia |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Which of the following would you find in the side view mirror of a car?
concave mirror |
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convex mirror |
|
convex lens |
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concave lens |
A concave (or converging) mirror bulges inward and focuses reflected light on the mirror's focal point where the mirror's angles of incidence converge. In contrast, a convex (or diverging) mirror bulges outward and diffuses the light waves that strike it. A common use of a concave mirror is in a reflecting telescope, a common use of a convex mirror is in the side view mirror of a car.