White-hot sparks from a fireworks sparkler are harmless when striking your skin because

A. the energy per molecule is very low.
B. they have a low temperature.
C. the energy per molecule is high, but the total energy transferred is small.
D. all of the above


Answer: C

Environmental & Atmospheric Sciences

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In comparison to light crude oil, which of the following statements is NOT true with respect to heavy crude oil? 

A. most of the remaining oil reserves consist of heavier crudes. B. refining heavy crude oil is more expensive. C. heavy crude oil is more viscous. D. oil companies prefer heavy crude oil because it is more profitable. E. heavy crude oil is more difficult to extract.

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What is the main difference between soil horizons and sedimentary bedding?

A) Soil horizons are less consistent. B) Soil horizons form in place. C) Sedimentary beds have a greater variety of particle sizes. D) Sedimentary beds are harder.

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For the given conditions, what would happen to the relative humidity value if the

temperature increased from 25°C? A) It would remain the same. B) It would increase. C) It would decrease. D) It depends on the dew point temperature.

Environmental & Atmospheric Sciences