Planets Quiz

These planets are called inner planets because of their _____, composition, and proximity to the sun.

• size
• color

• rings

What are the outer planets?

• The planets with no natural satellites

• The terrestrial planets

• The gas giants

• The planets named after the gods of war

The sun has no solid surface and its mass is made up of ___% hydrogen and 25% helium.

• 75
• 50

• 55

• 32

The interior of the sun includes the core, the radiation zone, and the ___.

• convection zone
• photosphereic zone

• corona

• atmospheric zone

Which planet is known as the "Red Planet"?

• Earth

• Mars

• Jupiter

• Venus

What makes Venus unique compared to most other planets in our solar system?

• It has the most moons.

• It orbits in the opposite direction.

• It is the hottest planet.

• It is the only planet with water.

Which planet is closest to the Sun?

• Mercury

• Venus

• Earth

• Mars

What is the smallest planet in our solar system?

• Mercury

• Mars

• Venus

• Earth

Which of the following is NOT an inner planet?

• Earth

• Jupiter

• Venus

• Mercury

What is the main component of the atmospheres of gas giants?

• Oxygen

• Hydrogen

• Carbon dioxide

• Nitrogen