Why Is the Sky Blue? (BigJin & Junu Quiz + Zombies + Big Bang)

Why is the sky blue?

• Our star, the Sun, is a blue star.

• Earth's oceans are blue, so the sunlight reflects off the surface and up into the sky.

• Green and red light can not penetrate Earth's atmosphere because of their low energy, but high energy, short wavelength blue light can penetrate to the surface.

• Blue light from the sun interacts (scatters) with Earth's atmosphere because it has a short wavelength.

A: long wavelength

B: medium wavelength

C: short wavelength

• A: green light

  B: red light

  C: blue light

• A: red light

  B: blue light

  C: green light

• A: red light

  B: green light

  C: blue light

• A: blue light

  B: green light

  C: red light

Our star, the Sun, emits all types of light. Which is the dominate color / wavelength of light that is emitted from the Sun's surface?

• Blue

• Green

• Yellow

• Red

• Violet / Purple

Which photo shows no scattering of sunlight?

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Which photo shows how the sunlight must travel through more atmosphere when the Sun is low on the horizon?

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Which photo shows an atmosphere that is 10x as thick as Earth's?

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What is the color of water?

• Blue

• Clear

Why does the Moon have no atmosphere?

• The Moon is small, so it does not have enough gravity to hold onto gases around its surface.

• Earth's gravity pulled the atmosphere from the Moon.

• Trick question, the Moon does have an atmosphere.

If there was a planet with a red sky, how would it's atmosphere compare to Earth's?

It would probably be ___.

• 100x thicker than Earth's

• 10x thicker than Earth's

• The same thickness of Earth's

• 1/10th the thickness of Earth's

The only type of light is the kind our eyes can detect.

• True

• False