| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
Which of the following would you find in the side view mirror of a car?
concave mirror |
|
concave lens |
|
convex lens |
|
convex mirror |
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.
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
products |
|
side effects |
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reactants |
|
results |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
Convert 0C° to F°.
32 |
|
-32 |
|
16 |
|
0 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(0) + 32\)
\(F° = 0 + 32 = 32\)
Large, puffy, mid-altitude clouds with a flat base and a rounded top describe which of the following?
cirrus clouds |
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cumulus clouds |
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stratus clouds |
|
fog |
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.
Which of the following is not a method of heat transfer?
convection |
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reflection |
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conduction |
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radiation |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.