Inner Planets

Front

The four small, dense, rocky planets that orbit closest to the sun are referred to as what?

Back

terrestrial planets

Front

Order of planets from the sun: Mars, Earth, Venus, Mercury; Venus, Mercury, Earth, Mars; Mercury, Venus, Earth, Mars; Mars, Venus, Earth, Mercury.

Back

Mercury, Venus, Earth, Mars

Front

You are an astronaut preparing for a mission to Mercury. Which of the following facts should you keep in mind?

• There are no rings around Mercury.
• It has a massive iron core.
• Mercury has no moons.
• All of the above.

Back

All of the above.

Front

Imagine you are an astronaut on Mercury. You would experience almost ___ Earth days in a single day there.

Back

59

Front

What is the name of the smallest planet in our solar system with an equatorial diameter of 4,879 km?

Back

Mercury

Front

Which planet is often referred to as the "Earth's twin"?

Back

Venus

Front

When Earth spins on its axis in a counterclockwise direction, this motion is referred to as ___

Back

prograde rotation

Front

Phenomenon of a planet rotating in the opposite direction to most other planets.

Back

retrograde rotation

Front

Does Venus take more time to complete one rotation on its axis than to complete one revolution around the sun?

Back

True

Front

____ rains down onto Venus’s surface, and the atmospheric pressure is at least 90 times that of Earth. Options: Carbon dioxide, Sulfuric acid, Nitrogen, Helium

Back

Sulfuric acid