Compared to the ocean, Earth's atmosphere is different in that
A) its density varies with depth.
B) it has a less-distinct surface.
C) molecules are more greatly spaced.
D) all of the above
E) none of the above
Answer: D
You might also like to view...
The axes on a Hertzsprung-Russell (H-R) diagram represent
A) mass and luminosity. B) luminosity and surface temperature. C) luminosity and apparent brightness. D) mass and radius.
A rocket taking off straight upward develops a thrust of 10,000 newtons. The rocket weighs 2,000 newtons. The net force on the rocket, neglecting air resistance, is
A) 8,000 newtons. B) 2,000 newtons. C) zero. D) 12, 000 newtons. E) 10,000 newtons.
If object A has more mass than object B,
a. A will weigh more than B. b. A will be harder to accelerate than B. c. A will be harder to keep moving in a circle. d. all of the above
Neutron stars have densities roughly the same as that of the atomic nucleus
Indicate whether the statement is true or false