Quiz on the Solar System

The solar system contains objects made of dust and rocks. Many are located between Mars and Jupiter. What are these celestial objects?

• asteroids

• meteors

• comets

• moons

Which planets are less than one astronomical unit from the Sun? Select 2 answers.

• Mercury

• Venus

• Jupiter

• Neptune

Which is the best explanation of why the Moon revolves around Earth?

• The Moon has a thinner atmosphere than Earth.

• The Moon is too large to move away from Earth.

• The Moon is attracted by the gravity of Earth.

• The Sun has a smaller gravitational force than Earth.

What invention contributed to the understanding of the solar system?

• microscope

• radio

• telephone

• telescope

If number 1 points to Earth, then 2 must point to

• Mercury

• Jupiter

• Venus

• Mars

Of the planets in the solar system, which characteristic can only be found on Earth?

• The water exists as a liquid, solid, and gas.

• The crust is made of solid rocks.

• The atmosphere contains different gases.

• The surface has been struck by meteorites.

Which object in the sky is a satellite of the planet Earth?

• Sun

• Moon

• Mars

• Saturn

Which of these is caused by the rotation of Earth?

• Tides

• Days and nights

• Spring and fall

• Rainfall

The planets known as "gas giants" include Jupiter, Uranus, and

• Pluto

• Saturn

• Mars

• Earth

Gravity is responsible for the

• orbits of the planets around the Sun.

• rotation of a planet on its axis.

• tilt of Earth's axis.

• phases of the Moon.