Science Primary 6 – Solar and Lunar Eclipses
Posted April 18, 2016on:
I like the way this sweet Physics Girl explaining the two eclipses. 🙂
Oh ya, here is another video to show the ‘umbra’ 本影区 and ‘penumbra’ 半影区.
Quiz: Which of the following is true about umbra and penumbra?
A. Umbra is darker than penumbra.
B. Umbra and penumbra refer to the same region.
C. Umbra can become penumbra depending on the amount of light.
D. Umbra and penumbra are affected by the Earth’s rotation.