Name__________________________________________ #________

5.3 Light:

Transverse WavesFill in the blanks using the following words.

trough transverse wavelength not highest

empty crest frequency between lowest

Light travels in transverse waves.

Parts of a transverse wave● Crest: The highest point of a transverse wave

● Trough: The lowest point of the transverse wave

● Wavelength: The distance _between two crests (or troughs) in a transverse wave

● frequency: is the number of waves passing a given point every second. The greater the

frequency, the greater the amount of energy.

Unlike sound, light does not need a medium to travel through. Light can travel through empty space.

The Visible SpectrumFill in the blanks using the following words. *Some words may be used more than once

white black red blue yellow orange violet green blue

List the colors of the visible

spectrum in order from longest wavelength to shortest wavelength

●

________________________

●

________________________

●

________________________

● ________________________

● ________________________

● ________________________

The color with the longest wavelength:red

The color with the shortest wavelength: violet

Black and white are not on the visible spectrum.

● ___________________ is when a material absorbs all the visible light and no light is reflected

back. It is a total absence of reflected light.

● _____________________is a reflection of all visible light together.

Opaque, Transparent, and Translucent

Sort the following objects as opaque, transparent, or translucent.

aluminum foil sunglasses notebook clear plastic food wrap (saran wrap)

brick wall thin fabric stained glass windows window

eyeglass lenses clean water wax paper wood

Opaque(light does not pass through)

Transparent(light passes through easily)

Translucent(light partially passes through)

Reflection and RefractionFill in the blanks using the following words.

prism same bending bounces rainbow

Reflection Refraction

Light is reflected when it hits an object and

bounces off. It is reflected at the same angle.

Refraction means the bending of a light wave

when it moves from one medium to another (ex:

air to water).

A prism iis used to refract white light and

disperse (spread) it into the color spectrum

(ROYGBV)

A rainbow_is an example of both refraction and reflection. Sunlight is first refracted when it enters

the surface of a spherical raindrop, it is then reflected off the back of the raindrop, and once again

refracted as it leaves the raindrop.

Label each picture as reflection or refraction

refraction _ __ reflection reflection refraction