Show What You Know About Space 1

First and Last Name

1. Which planet has the GREATEST attraction to the Sun?

• Pluto
• Saturn
• Mercury

2. Almost everything in the universe orbits around a central object. The planets orbit the Sun and Moons orbit planets. The force MOST responsible for these orbits is

• gravity
• strong force
• electromagnetism

3. Which characteristic of the Sun is MOST responsible for keeping the planets in orbit?

• its mass
• its color
• it is located in the center of the solar system

4. Which planets would you MOST LIKELY be able to see in the night sky without a telescope?

• Uranus and Jupiter
• Mercury and Neptune
• Venus and Saturn

5. Based on its mass, which area in space has the GREATEST gravitational pull?

• Neptune
• Jupiter
• the Moon
• the Earth

6. If a new star appeared in our solar system that was larger and heavier than the Sun, the planets would MOST LIKELY do what?

• float away in space
• continue to orbit the Sun
• orbit the new star

7. The planet Neptune is larger than the planet Venus. Yet you and I can see Venus easily. But for us to see Neptune, we would need a strong telescope. This is because

• of our position on the surface of the Earth.
• most of Neptune's mass is gas and we cannot see gas.
• Neptune is so far from Earth and Venus is much closer.

8. What would happen to the planets in the solar system if the Sun’s gravitational force were to suddenly disappear?

• They will stop spinning
• They will fly away in straight lines
• The will stop moving

9. Mrs. Flowers shows her class a correct model of the Solar System. What can the model show that is just like the real Solar System?

• how many planets there are
• how heavy Earth is
• how fast the Sun spins