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2.4 Transparent Substances Refract Light
Required
4 points
4
Question 1
1.
What occurs to light rays as they transition from one medium to another? Describe the process of refraction.
Required
4 points
4
Question 2
2.
Using the diagram below, describe how the type of medium influences refraction. (For more information, see page 203 of our textbook.)
Required
4 points
4
Question 3
3.
When is it easier for a bear to catch a fish: when the fish swims or when it jumps in the air? Use your understanding of how light travels in air and water to explain.
Required
4 points
4
Question 4
4.
The archer fish shoots jets of water from its mouth at unsuspecting bugs perched on branches above the water. Explain, in terms of how light travels, why these fish almost always “shoot” when they are directly beneath a bug. Why don’t they aim at an angle?
2.5 Lenses Refract and Focus Light
Required
4 points
4
Question 5
5.
Why are lenses useful for moving light around? (see page 204 of our textbook for additional information)
Required
4 points
4
Question 6
6.
Create a ray diagram illustrating the path of light rays through a concave lens. (Refer to page 204 of our textbook for further information that may assist you in answering this question)
Required
4 points
4
Question 7
7.
What type of image is created when an object is positioned at the focal point of a convex lens? (Refer to page 208 of our textbook for additional information that may help you answer this question)
Required
4 points
4
Question 8
8.
The image below illustrates the view through glass building blocks. How do these blocks allow light to pass while maintaining your privacy?
