| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.17 |
| Score | 0% | 63% |
Convert -20C° to F°.
78 |
|
36 |
|
-36 |
|
-4 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)
A transition zone between two air masses is called:
fog |
|
boundary |
|
front |
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thunderstorm |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
__________ is caused by a lack of Vitamin C.
anemia |
|
shingles |
|
scurvy |
|
diabetes |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Which of the following is not part of the carbon cycle?
respiration |
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precipitation |
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photosynthesis |
|
decomposition |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.
"For every action, there is an equal and opposite reaction." This describes which of Newton's laws of motion?
second |
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third |
|
fourth |
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first |
Newton's third law of motion states that For every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction on the first object.