Exam 7: Atmospheres of Venus, Earth, and Mars

Without the ozone layer,life on Earth would be in danger from increased levels of __________ radiation.

Which of the following does NOT contribute to more extreme seasonal variations on Mars compared to Earth?

All weather and wind on Earth are a result of convection in the:

Mars's atmosphere is mostly composed of carbon dioxide,therefore the greenhouse effect makes the average temperature 35 degrees warmer than it would be without its atmosphere.

Venus's surface temperature is fairly uniform from the equator to the poles because:

The planet-wide flow of air from the warm equator to the colder poles is called Hadley circulation.

Why are auroras seen mainly near the poles and not everywhere on Earth?

In the absence of a greenhouse effect,water would still be liquid on the surface of Earth.

Winds are generated on Earth because the Sun unevenly heats a rotating planet.

Runaway convection in the Earth's atmosphere can lead to:

An asteroid with an albedo of 0.1 and a comet with an albedo of 0.6 are orbiting at roughly the same distance from the Sun.How do their temperatures compare?

Most of Earth's present-day atmosphere comes from a combination of what three sources?

Why does the temperature decrease as you go higher up in altitude in the troposphere on Earth?

The global winds on Earth are the result of a combination of what three things?

Examine the figure below. The amount of carbon dioxide in the Earth's atmosphere has been increasing over the last 50 years because of:

When the Martian summer occurs and the daytime temperature is 20°C,water on the surface melts and forms small pools of liquid.

Which of the following factors does NOT directly influence the temperature of a planet?

If sunlight cannot penetrate Venus's cloud layer efficiently,why does the temperature remain so high?

The first atmospheres of the terrestrial planets formed from hydrogen and helium.Why? What happened to this gas?

Where is most of Earth's supply of carbon dioxide today?