Science 7 · Unit 6: Earth physics · Cambridge Lower Secondary Science Stage 7

Questions

1. 1. Which of these gives out its own light?

   • a planet
   • the Moon
   • the Sun
   • the Earth
   Check

2. 2. Which two of these do NOT give out their own light?

   • the Moon and the Earth
   • the Sun and the Moon
   • the Sun and the Earth
   • all three
   Check

3. 3. What is formed when an opaque object blocks rays of light?

   • sound
   • a reflection
   • a shadow
   • light
   Check

4. 4. What is an opaque object?

   • an object that gives out its own light
   • an object that reflects all light like a mirror
   • an object that lets all light through
   • an object that will not allow light to pass through it
   Check

5. 5. When does a solar eclipse happen?

   • when the Moon comes between the Sun and the Earth
   • when the Earth comes between the Sun and the Moon
   • when the Sun comes between the Earth and the Moon
   • whenever it is cloudy
   Check

6. 6. When does a lunar eclipse happen?

   • when the Earth comes between the Sun and the Moon
   • when the Moon comes between the Sun and the Earth
   • when the Sun comes between the Earth and the Moon
   • when the Moon is new
   Check

7. 7. In a solar eclipse, whose shadow falls on the Earth?

   • the Sun's
   • the Earth's own
   • Mars's
   • the Moon's
   Check

8. 8. In a lunar eclipse, whose shadow falls on the Moon?

   • the Earth's
   • a cloud's
   • the Sun's
   • the Moon's own
   Check

9. 9. In a diagram of an eclipse, how should the rays of light from the Sun be drawn?

   • as dotted circles
   • as curved lines
   • as straight lines, drawn with a ruler
   • as wavy lines
   Check

10. 10. The Moon takes about a month to orbit the Earth. Why don't eclipses happen every month?

    • Eclipses only happen in winter.
    • The Moon's orbit is tilted slightly, so it is not in the same plane as the Earth's orbit.
    • The Moon stops moving for part of each month.
    • The Sun is not there for part of each month.
    Check

11. 11. During a solar eclipse, where do people see a total eclipse?

    • everywhere on Earth at once
    • in the darkest part of the Moon's shadow
    • on the night side of the Earth
    • in the lighter, outer part of the shadow
    Check

12. 12. During a solar eclipse, where do people see a partial eclipse?

    • in the lighter, outer part of the Moon's shadow
    • only at the North Pole
    • on the night side of the Earth
    • in the darkest part of the shadow
    Check

13. 13. Why must you never look straight at the Sun during a solar eclipse?

    • It makes the eclipse end.
    • It can permanently damage your eyes.
    • The Sun is too far away to see.
    • It makes you sneeze.
    Check

14. 14. Someone says: 'I saw a lunar eclipse in the middle of the day.' Why can't this be true?

    • In a lunar eclipse the Moon is on the night side of the Earth, opposite the Sun.
    • The Moon can never be seen in the daytime.
    • Lunar eclipses only happen in winter.
    • The Sun is too bright to see eclipses.
    Check

15. 15. The earliest known predictions of when eclipses would happen were made about 3000 years ago. Who made them?

    • sailors in Antarctica
    • scientists using computers
    • astronomers in the Middle East
    • astronauts on the Moon
    Check