Exam 9: Atmospheres of the Terrestrial Planets

Would water molecules in Venus's atmosphere, whose temperature is 740 K, eventually escape into outer space? Note that a water molecule has a mass that is 18 times that of a hydrogen atom.The escape velocity of Venus is 10 km/s.For comparison, a hydrogen atom has an average velocity of 2.5 km/s at a temperature of 300 K.

On the surface of Mars, water could exist in what form(s): solid, liquid, and/or gas? How does this vary with the seasons on Mars? Why are the seasonal variations on Mars different in its northern and southern hemispheres?

The obliquity of Earth's rotation axis has remained stable at 23 degrees over its history, whereas that of Mars is believed to have varied from 13 to 40 degrees.Why?

A gas eventually will escape from a planet's atmosphere if the average velocity of the atoms exceeds 1/6 times the escape velocity of the planet.If the average velocity of water vapor in Venus's atmosphere is 0.9 km/s, would it eventually escape into outer space? Note that Venus's mass is 5 *10²⁴ kg, its radius is 6,050 km, and G = 6.67 *10 ^{- 11} N m ² /kg ² .

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

The main greenhouse gases in the atmosphere of the terrestrial planets are

Hurricanes are powered by

Heating from ________ causes the top of Earth's stratosphere to be warmer than the bottom.

The ________ in our atmosphere is a direct consequence of the emergence of life.

The presence of gases such as carbon dioxide and water vapor in a planet's atmosphere is direct evidence of ________ in a planet's history.

The planet-wide flow of air from Earth's equator to the colder poles is called Hadley circulation.An example of this effect is also seen

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

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

Which of the following processes did NOT contribute gas to Earth's secondary atmosphere?

List the three planets shown in the following figure in order of decreasing surface temperature, and cite evidence that can be seen in the images that supports your choice.

What is the main reason Hadley circulation in a planet's atmosphere breaks up into zonal winds?

If water vapor were released from Venus's surface because of tectonic activity into its upper atmosphere, what would most likely happen to it?

Earth has roughly ________ times more atmospheric pressure than Mars and ________ times less than Venus.

A gas eventually will escape from a planet's atmosphere if the average velocity of its atoms exceeds 1/6 times the escape velocity of the planet.If the average velocity of water vapor in Venus's atmosphere is 0.5 km/s, what would be the average velocity of a single hydrogen atom? If Venus's escape velocity is 11 km/s, will hydrogen atoms eventually escape?

What are the radiation belts surrounding Earth, and why do they exist?