School Holidays Physics Quiz: T4Chp05-1

a measure of how much a light ray bends when it enters that medium

• index of refraction
• reflection
• thermogram
• mirage

Which of these causes the colors in a rainbow to separate?

• sunlight passing through raindrops
• strong winds
• Earth's gravity
• different colors of light going at different speeds

Why does a ruler with one end in the air and one end under water appear bent?

• Light moves through air faster than it moves through water.
• The light is reflected from the ruler moves in a curved path.
• Light moves through water at the same speed as it moves through air.
• Light in the air is brighter than light in the water.

Through what kind of matter does light move fastest?

• liquids
• air
• matter that is lighter in color
• matter that is in larger objects 

What is a property of a transparent object?

• Almost all of the light rays that reach it are scattered.
• Almost all of the light rays that reach it are absorbed.
• Almost all of the light rays that reach it are reflected.
• Almost all of the light rays that reach it pass through it.

What is most likely to happen to light that hits an opaque object?

• All of the light passes through the object.
• None of the light passes through the object.
• Most of the light disappears.
• Some of the light passes through the object.

The intensity of light is related to its brightness.

• True
• False

White light can be separated into different colors by using a__________. 

• microscope
• prism
• mirror
• convex lens

What form of energy travels faster?  Light or Sound?

• light
• sound

Why does light bend when it moves from one material to another?

• because it travels slow
• because it travels fast
• because it changes speed and bends
• light does not bend