Our Solar System

Which of the following is NOT something used by scientists to learn more about our solar system.

• telescope

• microscope

• rover

• shuttle

The path that an object takes around another object is its _______________.

• telescope

• gravity

• constellation

• orbit

Which planet is known as the Red Planet?

• Mars

• Jupiter

• Earth

• Mercury

What planet is closest to the Sun?

• Saturn

• Uranus

• Mercury

• Earth

The mass of Jupiter is larger than the mass of Earth. Therefore the gravitational pull of Jupiter would be ___________ than the gravitational pull of Earth.

• the same as

• less

• more

Why is the force of gravity weaker on the Moon than it is on Earth?

• The mass of the moon is less than the mass of Earth.

• The mass of the Earth is less than the mass of the Moon.

• The Earth is closer to the Sun than the Moon.

• The Earth has more water than the moon.

How do planets in our Solar System move?

• They stay still in the same spot in space at all times.

• They move in a straight line across the Milky Way.

• They move in orbit around the Sun.

• They move in orbit around the Earth.

What is the center of our Solar System?

• EARTH

• The Sun

• Mars

• The Moon

What keeps the planets in orbit around the sun?

• winds

• stars

• gravity

• space probes

What do scientists call groups of stars that form patterns?

• the asteroid belt

• constellations

• meteoriods

• comets