Atmosphere

Definition

The atmosphere is the layer of gases surrounding a planet, held in place by the planet's gravity. It plays a crucial role in regulating temperature and protecting the surface from harmful solar radiation.

5 Must Know Facts For Your Next Test

1. The atmospheres of the giant planets are primarily composed of hydrogen and helium.
2. Jupiter's atmosphere features prominent bands of clouds and massive storms like the Great Red Spot.
3. Saturn's atmosphere contains less helium compared to Jupiter, leading to differences in cloud composition and appearance.
4. Uranus has a higher concentration of methane in its atmosphere, giving it a blue-green color.
5. Neptune's atmosphere also contains methane, but its dynamic weather systems result in more intense storms and high-speed winds.

Review Questions

Related terms

Hydrogen:

A light, abundant element that is a primary component of giant planet atmospheres.

Methane:

A gas found in significant quantities in Uranus and Neptune's atmospheres, contributing to their blue-green color.

Great Red Spot:

A massive storm system on Jupiter known for its size and longevity.