Our Solar System

Science · Space Exploration · ages 5-7

Name ______________________ Date ____________

Earth is the only planet there is.
Circle one: True False
Which of these is a planet, just like Earth?
- The Moon
- Mars
- The Sun
What do we call the Sun and all the planets together?
- The solar system
- The night sky
- A galaxy
Look at the list. Which of these are planets?
- Only the Sun
- Mercury, Venus, Earth, and Mars
- All five of them
Which group of things makes up our solar system?
- Just the stars we see at night
- Only the Earth and Moon
- The Sun and the planets that orbit it
Where are the planets and stars found?
- In space, beyond Earth's sky
- Inside Earth's clouds
- Under the ocean
Zoe says the solar system is just the Moon. What is wrong?
- Zoe is right
- It's the Sun and all the planets, not just the Moon
- It means only stars
Sam says space is just the sky above his house. Is Sam right?
- Yes, that is right
- Space is not real
- No, space goes far beyond Earth's sky

Answer key

For grown-ups. Fold this page away before handing over the rest.

False · There are other planets too, not just Earth.
Mars · Mars is a planet. The Moon and the Sun are not planets.
The solar system · The Sun and all its planets together are called the solar system.
Mercury, Venus, Earth, and Mars · The Sun is a star. The other four are planets.
The Sun and the planets that orbit it · The solar system is the Sun plus every planet that circles it.
In space, beyond Earth's sky · Space is far beyond Earth's sky. That is where planets and stars are.
It's the Sun and all the planets, not just the Moon · The solar system means the Sun and every planet around it. It is not just the Moon.
No, space goes far beyond Earth's sky · Space is much bigger than the sky over one house. It reaches far past Earth's sky.