Science 3 · Unit 6: The Earth and the Moon · Cambridge Primary Science Stage 3

Questions

1. 1. What is the Moon made of?

   • ice cream
   • gas
   • water
   • rock
   Check

2. 2. What do we call the circle the Moon moves in around the Earth?

   • its phase
   • its orbit
   • its pole
   • its crater
   Check

3. 3. How long does the Moon take to orbit the Earth?

   • about 29 days
   • one year
   • one day
   • one hour
   Check

4. 4. How are craters made on the Moon?

   • Volcanoes made all of them recently.
   • Rain washed them out.
   • Space rocks hit the Moon's surface.
   • Astronauts dug them.
   Check

5. 5. What keeps the Moon in its orbit?

   • Earth's gravity pulls it towards the Earth.
   • magnets
   • a long string
   • friction
   Check

6. 6. Who was the first person to walk on the Moon?

   • Thomas Edison
   • Isaac Newton
   • Mary Anning
   • Neil Armstrong
   Check

7. 7. Is the Moon larger than the Earth?

   • Yes
   • No
   Check

8. 8. In Sofia's model, a paper ball on a string goes round her. What does the string show?

   • the Earth
   • the Moon
   • gravity
   • the Sun
   Check

9. 9. What is a scale model?

   • a model made of fish scales
   • a model that weighs things
   • a full-size copy
   • a model that shows things at the correct size compared to each other
   Check

10. 10. In the scale model 1000 km = 1 cm, the Earth is 13 000 km across. How big is the model Earth?

    • 1.3 cm
    • 13 cm
    • 130 cm
    • 1300 cm
    Check

11. 11. Jupiter is 140 000 km across. How big is it in a scale model where 1000 km = 1 cm?

    • 14 cm
    • 14 000 cm
    • 140 cm
    • 1400 cm
    Check

12. 12. Which is the biggest planet in our Solar System?

    • Jupiter
    • Mercury
    • Earth
    • Mars
    Check

13. 13. Which is the smallest planet?

    • Jupiter
    • Mercury
    • Neptune
    • Saturn
    Check

14. 14. A traditional tale says a rabbit lives on the Moon. Is that true?

    • No, it is just a story.
    • Yes, on the dark side.
    • Yes, astronauts saw it.
    • Only at full Moon.
    Check

15. 15. Zara holds a football and Arun holds an orange to model the Earth and Moon. Who should move?

    • Zara, going round Arun
    • Arun, with the orange, going round Zara
    • neither of them
    • both of them away from each other
    Check

16. 16. In a scale model, 1000 km is shown by 1 cm. The Moon is 385 000 km from the Earth. How far apart should the model Earth and Moon be?

    • 3850 cm
    • 13 cm
    • 38.5 cm
    • 385 cm
    Check

17. 17. About how long did it take astronauts to travel to the Moon in a rocket?

    • three weeks
    • three hours
    • three years
    • three days
    Check