3 - Refraction

What is refraction?

• light bouncing off of smooth surface

• light changing speed as it passes through a different material.

• light being absorbed by an object

• light speeding up when it leaves the light source

What does the refractive index tell us?

• how much the speed of light is reduced when it enters different substances

• how much light will be reflected

• the number of light rays that enter a substance.

• how much of a shadow an object will create

What causes refraction?

• light changing speed as it enters different substances

• shiny materials that allow light to pass through

• rainbows

• light changing direction as it exits different materials

What type of lens is this?

• double convex

• double concave

• double bowed out

• double bowed in

What type of lens is this?

• double convex

• double concave

• double bowed out

• double bowed in

Which type of lens would you use to magnify an object?

• concave

• convex

What type of lens would you use in a peephole on a door?

• concave

• convex

If ice has a refractive index of 1.31 and rubies have a refractive index of 1.54, which object will the light slow down in more?

• ice

• ruby

• air

What is another name for a concave lens?

• converging lens

• diverging lens

• continuing lens

• dividing lens

What is another name for a convex lens?

• converging lens

• diverging lens

• continuing lens

• dividing lens