I WONDER - What Is Refraction?

The video explains how light waves bend when their speed is affected by different materials, such as water and glass, causing phenomena like objects appearing bent underwater. It also discusses the speed of light in a vacuum, which is 300,000 kilometers per second, and how it takes light 1.255 seconds to travel from the moon to Earth and over 8 minutes from the sun to Earth.

What happens to light waves when they pass through materials like water and glass?

• They speed up.

• They disappear.

• They change color.

• They bend.

Why do objects underwater sometimes appear bent?

• Because water is opaque.

• Because water is transparent.

• Because light waves bend in water.

• Because water is reflective.

How fast does light travel in a vacuum?

• 450,000 kilometers per second

• 300,000 kilometers per second

• 600,000 kilometers per second

• 150,000 kilometers per second

How long does it take for light to travel from the moon to Earth?

• 10 seconds

• 5 seconds

• 2.5 seconds

• 1.255 seconds

How long ago did the sunlight we see leave the sun?

• 1 minute ago

• 4 minutes ago

• 8 minutes ago

• 12 minutes ago