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Basics of Light Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

Page 1

Question 1 1. The _____ is responsible for all the natural light we see on Earth.

Question 2 2. As humans, we can see different colors on Earth because of _____.

Question 3 3. The speed of light travels about _____ kilometers a second.

Question 4 4. Which of the following sources can be one of the lines in the angle of incidence?

Question 5 5. What unit of measure is used to measure the angle of incidence?

Page 2

Question 6 6. In addition to a ray of light, what is another kind of line that is part of the angle of incidence?

Question 7 7. Which of the following best describes transmission in physics?

Question 8 8. What causes the chemical reaction that creates electromagnetic energy, which is responsible for light?

Question 9 9. Which of the following best describes absorption in physics?

Question 10 10. A reflection is when energy _____.

Page 3

Question 11 11. The law of reflection says that when light hits a mirror from an angle, _____.

Question 12 12. The law of reflection can be used to measure how light will reflect _____.

Question 13 13. In this picture, the girl's eye that is behind the magnifying glass seems much larger than the rest of her face. Which choice BEST explains why?

Question 14 14. This picture shows a white beam of light entering a prism from the left. On the right side, the light has been divided into beams of different colors. Why is this an example of refraction?

Question 15 15. Choose the BEST answer to explain how a flashlight, with a tiny light bulb, allows you to see when you walk outside in the dark.

Page 4

Question 16 16. The image you see in a plane mirror is called a _____ image because it is not a real, physical object.

Question 17 17. Which of the following is NOT a common use of plane mirrors?

Question 18 18. Your bathroom mirror can be classified as a _____ mirror.

Question 19 19. Light is a form of _____.

Question 20 20. The major differences between light and sound are their speed and _____.

Page 5

Question 21 21. Scientists have discovered that _____ is the fastest thing in the world.

Question 22 22. Where is the cornea found in the eye?

Question 23 23. The iris is similar to what part of a camera?

Question 24 24. If your eyes are said to be brown, what part of the eye is responsible for the brown color?

Question 25 25. What is NOT an example of a luminous object?

Page 6

Question 26 26. How is luminosity measured?

Question 27 27. How can you see objects that are non-luminous?

Question 28 28. _____ are important to wear outside to protect your eyes from the sun's damaging rays.

Question 29 29. The sun emits rays that can be harmful to humans. What two types of rays do we need protection from?

Question 30 30. UVA and UVB rays can cause skin cancer, eye damage, and _____.

Basics of Light Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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