Eyeglasses and camera lenses change the path of light to focus an image. Which of the following is responsible for that change?
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Refraction
Yes! Refraction bends light as it moves from one substance to another. By bending the light, we can use refraction to focus the image in a camera, or to correct the focus of the lens in our eyes. -
Reflection
No. While some light is reflected from a lens, that does not help us focus the image. -
Absorption
No. The lens is clear, telling us that very little of the light is being absorbed. Absorption does not help the lens focus. -
Diffusion
No. Diffusion is the scattering of light as it is reflected in many different directions. Diffusion would make the image cloudy and blurry, not help focus it.
Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.
Florida
SC.3.P.10.3 Demonstrate that light travels in a straight line until it strikes an object or travels from one medium to another.
Why is Foam White? | video, checked |
Microscopes: Growing Crystals | video, free, learnalong, Updated |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Mirage | video, free, ClosedCaptions, Updated |
Pinhole Eyeglasses | video, checked |
Why Wet Things Turn Dark | video, checked |
Growing Crystals Under the Microscope | video, free, learnalong, checked |
Changing the Speed of Light | video |
A Long Lens | text page |
Review Light-1 | practice |
Review Light-2 | practice |
Review Light-3 | practice |
Review Light-4 | practice |
Review Light-5 | practice |
SC.3.P.10.4 Demonstrate that light can be reflected, refracted, and absorbed.
Why is Foam White? | video, checked |
Onion Crystals | video |
Microscopes: Growing Crystals | video, free, learnalong, Updated |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Mirage | video, free, ClosedCaptions, Updated |
Pinhole Eyeglasses | video, checked |
Looking for Rainbows | video |
Why Wet Things Turn Dark | video, checked |
Growing Crystals Under the Microscope | video, free, learnalong, checked |
Changing the Speed of Light | video |
A Long Lens | text page |
Sunlight, Energy, and Crayons | text page, free |
Review Light-5 | practice |
Review Light-1 | practice |
Review Light-2 | practice |
Review Light-3 | practice |
Review Light-4 | practice |
SC.7.P.10.2 Observe and explain that light can be reflected, refracted, and/or absorbed.
Changing the Speed of Light | video |
Onion Crystals | video |
Why is Foam White? | video, checked |
Microscopes: Growing Crystals | video, free, learnalong, Updated |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Mirage | video, free, ClosedCaptions, Updated |
Pinhole Eyeglasses | video, checked |
Why Wet Things Turn Dark | video, checked |
Growing Crystals Under the Microscope | video, free, learnalong, checked |
Finding Fat in Foods | video, ClosedCaptions, checked |
A Long Lens | text page |
Sunlight, Energy, and Crayons | text page, free |
Review Light-3 | practice |
Review Light-4 | practice |
Review Light-5 | practice |
Review Light-1 | practice |
Review Light-2 | practice |
Utah
UT.8.IV.1.b Compare the transfer of energy (i.e., sound, light, earthquake waves, heat) through various mediums.
Doppler Effect | video, checked |
Solar Power | video, checked |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Noisy String | video, checked |
Mirage | video, free, ClosedCaptions, Updated |
About Microwaves | video, checked |
Microwave Chocolate | video, checked |
Spoon Bells | video, checked |
The Singing Glass | video, checked |
Why Wet Things Turn Dark | video, checked |
The Science of Pizza | video, checked |
Heating a Balloon | video, ClosedCaptions, checked |
Changing the Speed of Light | video |
Comparing How Sound Moves Through Liquids and Gases | text page |
Review Light-2 | practice |
Review Light-4 | practice |
Review Light-5 | practice |
Review Light-1 | practice |
NGSS
1-PS4-3 Plan and conduct an investigation to determine the effect of placing objects made with different materials in the path of a beam of light.
Changing the Speed of Light | video |
Why is Foam White? | video, checked |
Onion Crystals | video |
Microscopes: Growing Crystals | video, free, learnalong, Updated |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Mirage | video, free, ClosedCaptions, Updated |
A Color You Can't See | video, free, checked |
Pinhole Eyeglasses | video, checked |
Why Wet Things Turn Dark | video, checked |
Growing Crystals Under the Microscope | video, free, learnalong, checked |
Sunprints | video |
A Long Lens | text page |
Review Light-4 | practice |
Review Light-5 | practice |
Review Light-1 | practice |
Review Light-2 | practice |
Review Light-3 | practice |
MS-PS4-2 Develop and use a model to describe that waves are reflected, absorbed, or transmitted through various materials.
Finding Fat in Foods | video, ClosedCaptions, checked |
Changing the Speed of Light | video |
Why is Foam White? | video, checked |
Sunglass Science: Birefringence | video, free, Updated |
Sunglass Science: Polarized Light | video, free, Updated |
Mirage | video, free, ClosedCaptions, Updated |
About Microwaves | video, checked |
Microwave Chocolate | video, checked |
Why Wet Things Turn Dark | video, checked |
Onion Crystals | video |
Sunprints | video |
A Long Lens | text page |
Sunlight, Energy, and Crayons | text page, free |
Review Light-1 | practice |
Review Light-2 | practice |
Review Light-4 | practice |
Review Light-5 | practice |