Eclipse of the Moon – Space science
An eclipse of the moon. You can see the curved shadow of the Earth. What is an eclipse of the moon? An eclipse of the moon happens when the Earth gets between [...]
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08, 2017
18
08, 2017
How old is the Earth? – Astronomy
Earth from space: How old is the Earth? When did the Earth form? Like Mercury and Venus and the other planets that go around the Sun, the Earth probably formed a little more than four and a [...]
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08, 2017
Rainbows and water – a sun project
Sunshine through the clouds and Earth's atmosphere You can see that the sunlight that reaches the Earth travels at different wavelengths. On a sunny day, put a full glass of water (a real glass glass) in [...]
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08, 2017
Moon project – Astronomy activity
Crescent moon (thanks to Wade Clark at Skychasers). Can you see the rest of the moon, in shadow? Go outside and look at the moon at night. How much of the moon [...]
17
08, 2017
Eclipse of the sun project – Astronomy
(not to scale)Thanks to The Fraudulent Volcano blog To see how an eclipse happens, get a flashlight or a candle (to be the sun). Get an orange (to be the Earth). And get a ball about [...]
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08, 2017
Earth, Sun, Moon dance – Astronomy project
An eclipse of the moon. You can see the curved shadow of the Earth. Watch an eclipse as an astronomy project! Dance the Earth and the Sun... To get a [...]
17
08, 2017
Nuclear physics – fission and fusion
Atomic bomb explosions make a "mushroom cloud" - this is a fission reaction Nuclear physics is the process of getting energy from the nucleus of an atom. There are two ways to release [...]
17
08, 2017
Nuclear fusion – Simple Physics
The Sun shining from space: nuclear fusion in action. The first fusion reactions Fusion reactions are how the first stars got started. Soon after the Big Bang, hydrogen atoms began bumping into each other and [...]
16
08, 2017
What is centrifugal force? Physics definitions
Kids playing tetherball using centrifugal force Who first explained centrifugal force? When something is going straight, it always keeps going straight unless something else stops it or turns it. (The [...]
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08, 2017
What is a light-year? Physics definitions
Light takes years to reach us from these stars far away in space. What is a light-year? A light-year is the distance that light can travel in one year - [...]
