Skip to main content

When shadows cross in space

Open to everyone until Friday, November 13

To keep it, print it while it is open.

An eclipse happens when the Sun, Moon and Earth line up and one casts its shadow on another. The Moon’s shadow can fall on Earth, and Earth’s shadow can fall on the Moon.

In the picture

  1. The Sun: the bright light source that makes every shadow
  2. The Moon between Sun and Earth: it blocks sunlight and casts a shadow
  3. The darkest shadow: from inside it, the Sun is fully covered (total solar eclipse)
  4. The lighter shadow: from here, the Sun is only partly covered
  5. The Moon in Earth’s shadow: it dims and turns reddish (lunar eclipse)

Examples

  • Standing in the narrow dark shadow, you would see daytime turn dark like dusk for a few minutes.
  • On a lunar eclipse night, anyone on the night side of Earth can see the Moon turn copper red.

Quiz: When shadows cross in space (Age 12)

  1. Which line-up of the three bodies causes a solar eclipse?

    • Earth is between the Sun and the Moon
    • The Moon is between the Sun and Earth
    • The Sun is between Earth and the Moon
  2. During a lunar eclipse, which body is in the middle of the line-up?

    • The Moon
    • Earth
    • The Sun
  3. If you stood inside the darkest part of the Moon’s shadow on Earth, what would you see?

    • The Sun only partly covered
    • The Sun completely covered
    • The Sun shining as normal

The answers, each with its explanation, are in the app. This quiz is free there while the lesson is in the free week.

Get the app

Free app, optional subscription
App Store Google Play

Carry on in the app

At least one new illustrated lesson every weekday for your child’s year, with its quiz and a reminder at 6:15 pm.

Your child’s teacher does not use My Enhanced Teacher yet?

Tell them about it

Astronomy, Age 12