Let’s see how much you’ve picked up with these experiments and the reading – answer as best as you can. (No peeking at the answers until you’re done!) Just relax and see what jumps to mind when you read the question. You can also print these out and jot down your answers in your science notebook.
Click here for a printer-friendly version of the Unit 9: Light & Lasers Exercises.
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1. Can light change speeds? How about sound waves?
2. Can you see ALL electromagnetic waves with your eyes?
3. Which has a longer wavelength, red or blue light? Which has more energy?
4. Give three examples of a light source.
5. Are radio waves the same thing as sound waves?
6. How does a microwave cook your food?
7. How is a snake like a TV remote?
8. Does UV light have more or less energy than visible light we can see with our eyes?
9. Is light a particle or a wave?
10. What was so cool about Einstein’s red light/ blue light experiment?
11. How do you make yellow light? Yellow paint?
12. What does a prism do?
13. How far do you need to rotate the sunglasses to block most (if not all) light?
14. Why does the pencil appear bent? Is it always bent?
15. How can you make a glass container disappear?
16.How does a microscope work?
Need answers?
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