Light Review

Light Energy Review

Read each statement carefully and choose the best answer.

Multiple Choice

What kind of waves are light waves?

• Longitudinal waves

• Electrons

• Transverse Waves

Fill in the Blanks

Lightwaves are characterized by their

Multiple Choice

What is a wavelength?

• Distance between the top and bottom of a wave

• Distance between any two identical points on successive waves

Fill in the Blanks

The shorter the wavelength, the

the amount of energy

Multiple Choice

What determines color?

• amplitude

• crests

• electromagnetic

• wavelength

Multiple Choice

A light wave's amplitude determines its __________

• wavelength

• loudness

• brightness

• color

​Light Energy

​Light energy is the energy of traveling waves that makes things visible to the eye.

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​Light energy allows us to see things up close, and to see things in different colors.

​Movement of Light

​Light waves move in a straight line and can travel through empty space (vacuum).

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​Light will continue to move in a straight line unless an opaque object gets in the way. Then a shadow is formed.

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​Light can also be reflected and refracted.

​Light Reflection

​Reflection happens when light bounces off an object and moves in another direction.

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​The light will still travel in a straight line, but just in a different direction.

​Refraction

Refraction happens when light gets bent in transparent materials such as water, air, glass, or a prism.

​Refraction can cause:

• ​Objects to look bent like in water.

• ​Objects to look bigger like through a lens.

• ​A rainbow to appear when light gets broken into its 7 colors.

​Transparent- allows light to pass through it so objects can be seen clearly.

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​Translucent- allows some light to pass but objects don't have a detailed shape.

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​Opaque- no light passes through it.

​​What can Light pass through?

Multiple Choice

A block of wood is opaque.

• true
• false

Multiple Choice

Light travels...

• around corners

• in a straight line

• in waves

• in circles

Multiple Choice

Light bounces off when it is

• reflected

• absorbed

• refracted

• transmitted

Multiple Choice

Light bends when it is 

• refracted
• reflected
• absorbed

Multiple Choice

What do smooth, shiny surfaces do?

• reflect light

• refract light

• absorb light

Multiple Choice

When we see a rainbow, we see

• light being reflected

• light being refracted

• light being absorbed

Multiple Choice

Light that bends has been ____________________

• teleported
• reflected
• charged
• refracted

Multiple Choice

This is an example of?

• Absorb

• Reflection

• Refraction

• Transmition

Dropdown

Light travels in a _________________ line

Select answer

​

Multiple Choice

Light behaves differently in different materials. What happens to light when it is reflected

• light bends off

• light is being transmitted

• light is being absorbed

• light bounces off

Multiple Choice

Light behaves differently in different materials. What happens to light when it is REFRACTED?

• light bends off

• light is being transmitted

• light is being absorbed

• light bounces off

Fill in the Blanks

Opaque materials allows

light to pass through

Fill in the Blanks

Translucent materials allows

light to pass through

Fill in the Blanks

A car's windshield allows all light to pass through. Therefore, it is a

material.

Dropdown

Solar Panels transforms ​

Select answer

energy into ​

Select answer

energy.

Fill in the Blanks

Transparent materials allows

light to pass through

Reorder

Arrange the colors from the highest frequency or the most energy to the lowest frequency or least energy

• Green

• Yellow

• Red

1

2

3

4

• 1
• 2
• 3
• 4

Categorize

Options (10)

clear glass

clean water

clear plastic bag

frosted glass

wax paper

sheer fabric

metal bars

aluminum foil

brick wall

Label the materials as TRANSPARENT, TRANSLUCENT or OPAQUE

Transparent

Translucent

Opaque

Multiple Choice

Which is NOT true about light

• Light waves is also called transverse waves

• Light does not need a medium to travel through

• Light travels the slowest in a vacuum

• Light travels faster than sound

Multiple Choice

During winter season, when the air is cold, what color of clothes can help warm body?

• white

• bright colored shirts

• dark colored shirt