Light Review

Which of the following is an example of a transparent item?

• A block of wood

• A piece of wax paper

• A car windshield

• A thin napkin

Light transfers —

• thermal energy in transverse waves

• mechanical energy in compression waves

• radiant energy in transverse waves

• electrical energy in compression waves

Both light and sound travel in waves. Why do you see a commercial jet high in the sky before you hear it?

• People have better vision than they do hearing.

• Light travels faster than sound.

• Light and sound have different wavelengths.

• Light waves travel in straight lines called rays.

When a beam of white light passes through a prism, the light is —

• reflected

• absorbed

• transmitted

• refracted

The top of a light wave is called________.

• Tough

• Crest

• Wavelength

The bottom of a light wave is called________.

• Tough

• Crest

• Wavelength

The distance from one wave to the other is called________.

• Tough

• Crest

• Wavelength

When light travels, it does NOT need —

• a medium to travel through

• a transverse wave to transfer energy

• radiant energy particles

• the visible spectrum

What is true about light?

• Sunlight only contains ultraviolet light.

• Visible light is radiant energy that can be seen.

• Sound waves travel faster than light waves.

• Light waves travel up and down until they hit something.

Which list of items contains examples of materials that are all transparent?

• Clear glass, clean water, and wax paper

• Wood, bricks, and frosted glass

• Clear plastic, clean water, and air

• Metal, aluminum foil, and thick paper