Why does refraction happen?

It happens because air and glass have different densities, causing them to change direction.

It happens because the angle of incidence is the same as the angle of reflection.

What is the critical angle?

When light passes from one medium to another and it changes speed.

When sound passes from one medium to another and it changes speed.

When vibrations pass from one medium to another and changes speed.

Quiz

Libsy 3 questions

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1Refraction is when a wave enters a new material and?
1. AStays the same
2. BStops moving
3. CChanges direction
2Why does refraction happen?
1. AIt happens because air and glass have different densities, causing them to change direction.
2. BIt happens because the angle of incidence is the same as the angle of reflection.
3What is the critical angle?
1. AWhen sound passes from one medium to another and it changes speed.
2. BWhen light passes from one medium to another and it changes speed.
3. CWhen vibrations pass from one medium to another and changes speed.