Unit 7 Lesson 1 Solar System Quiz

What is the central star of our solar system?

• Saturn

• Earth

• Sun

• Moon

What objects revolve around the Sun in our solar system?

• planets

• stars

• comets

• asteroids

How many planets are in our solar system?

• eight

• nine

• seven

• ten

An axis is:

• An imaginary line that goes through the center of a planet

• A real line that can be seen on the surface of a planet

• A line that only exists in mathematical models

• A visible line that divides the planet into two hemispheres

The Earth rotates on its ______ .

• axis

• orbit

• equator

• pole

Small natural objects that revolve around other objects.

• Planets

• Moons

• Asteroids

• Comets

Earth has only 1 moon and it revolves around the Earth about every ______ days.

• 27

• 30

• 29

• 31

The four outer planets are Mercury, Venus, Earth, and Mars.

• True

• False

The four inner planets are very dense and rocky. They have a thin atmosphere and small diameter.

• True

• False

Which planets are the outer planets?

• Mercury, Venus, Earth, and Mars

• Jupiter, Saturn, Uranus, and Neptune

• Pluto, Eris, Haumea, and Makemake

• Earth, Mars, Jupiter, and Saturn