The Inner Planets

Front

What is the atmosphere of Venus primarily composed of?

Back

The atmosphere of Venus is primarily composed of carbon dioxide, with clouds of sulfuric acid.

Front

What is the surface temperature of Venus, and why is it so high?

Back

The surface temperature of Venus is around 900 degrees Fahrenheit (475 degrees Celsius) due to a strong greenhouse effect.

Front

What is the main reason Mercury has almost no atmosphere?

Back

Mercury has almost no atmosphere because of its small size and proximity to the Sun, which causes any atmosphere to be stripped away.

Front

What is the average distance of Mercury from the Sun?

Back

The average distance of Mercury from the Sun is about 36 million miles (58 million kilometers).

Front

What is the shape of the orbits of the planets in our solar system?

Back

The orbits of the planets in our solar system are slightly elliptical.

Front

What is the primary component of Earth's atmosphere?

Back

The primary component of Earth's atmosphere is nitrogen, making up about 78% of the atmosphere.

Front

What percentage of Earth's surface is covered by water?

Back

About 71% of Earth's surface is covered by water.

Front

What is the significance of the Mariner 10 space probe?

Back

Mariner 10 was the first spacecraft to successfully fly by Mercury, providing valuable data about the planet.

Front

What are the four inner planets of the solar system?

Back

The four inner planets of the solar system are Mercury, Venus, Earth, and Mars.

Front

What is the main characteristic that distinguishes inner planets from outer planets?

Back

Inner planets are rocky and have solid surfaces, while outer planets are gas giants.