Science 4 · Unit 5: Light · Cambridge Primary Science Stage 4

Questions

1. 1. What is the Earth's axis?

   • the line between day and night
   • an imaginary line through the Earth that it spins around
   • the path the Earth takes around the Sun
   • the edge of the Earth
   Check

2. 2. How long does the Earth take to spin once on its axis?

   • 24 hours
   • 365 days
   • 12 hours
   • one month
   Check

3. 3. The half of the Earth facing away from the Sun has ...

   • day
   • night
   Check

4. 4. Why does almost every part of the Earth have some daylight and some darkness every day?

   • The Earth spins, so each part faces the Sun and then faces away.
   • The Sun goes round the Earth every day.
   • The Moon blocks the Sun every night.
   • The Sun switches off at night.
   Check

5. 5. Why do all the planets have some hours of daylight and some of darkness?

   • They all spin on their axes.
   • They all orbit the Earth.
   • They all have moons.
   • They are all the same size.
   Check

6. 6. Mercury takes 59 Earth days to spin once. Are its days and nights longer or shorter than Earth's?

   • longer
   • shorter
   Check

7. 7. Jupiter takes 10 Earth hours to spin once. Are its days and nights longer or shorter than Earth's?

   • longer
   • shorter
   Check

8. 8. The half of a planet facing the Sun has ...

   • day
   • night
   Check

9. 📖 This question is about a text that students read in the app.

   9. How long does Venus take to spin once on its axis?

   • 243 Earth days
   • 24 Earth hours
   • 59 Earth days
   • 10 Earth hours
   Check

10. 📖 This question is about a text that students read in the app.

    10. How long does Mars take to spin once on its axis?

    • 10 Earth hours
    • 59 Earth days
    • 24 Earth hours
    • 24½ Earth hours
    Check

11. 📖 This question is about a text that students read in the app.

    11. Which planet has the longest "day"?

    • Venus
    • Mercury
    • Earth
    • Jupiter
    Check

12. 📖 This question is about a text that students read in the app.

    12. On Venus, a day lasts 243 Earth days. If you slept for half of each day, how long would you sleep?

    • 486 Earth days
    • 121½ Earth days
    • 12 Earth hours
    • 243 Earth days
    Check

13. 📖 This question is about a text that students read in the app.

    13. Which planet has the shortest "day"?

    • Mars
    • Earth
    • Jupiter
    • Mercury
    Check

14. 📖 This question is about a text that students read in the app.

    14. On Earth, you spend about 6 of the 24 hours of a day at school. How long would that be on Jupiter, with a 10-hour day?

    • 4 hours
    • 6 hours
    • 2½ hours
    • 10 hours
    Check

15. 📖 This question is about a text that students read in the app.

    15. Which planet's day is closest in length to a day on Earth?

    • Jupiter
    • Venus
    • Mars
    • Mercury
    Check