T5L3

Students place a pencil in a glass of water as shown. The pencil in the water looks broken because —

• water can dissolve pencils
• water is colder than air
• light bends when it enters the water
• light is absorbed when it hits the glass

Roger Bacon is credited for developing the magnifying glass. His understanding of which of these was most useful for this development?

• Light
• Sound
• Gravity
• Electricity

Which explains why the fork looks different under water?

• Light is refracted at an angle.
• The wavelength of light lengthens
• Light cannot pass through the glass.
• The amount of light increases when going through water.

Which of these correctly shows how light acts when it hits a mirror?

• F
• G
• H
• J

Two flashlights are turned on. The light rays they create are shown in the diagram. These light rays best illustrate that —

• both rays are reflected
• both rays are refracted
• Ray 1 is reflected and Ray 2 is refracted
• Ray 1 is refracted and Ray 2 is reflected

Which object helps people understand what makes up white light?

• Barometer
• Prism
• Microscope
• Thermometer

The flower’s stem appears larger under water because the water —

• absorbs light
• produces light
• repels light
• refracts light

A shiny aluminum screen can be placed on the windshield of a parked car. This screen helps to keep the car cool because it —

• reflects the sunlight
• absorbs heat
• causes evaporation
• conducts electricity

Which of these does not emit light waves? 

• A
• B
• C
• D

Which diagram shows a wave with the highest frequency? 

• A
• B
• C
• D