Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 367 · 40 questions

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

1. 1.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
2. 2.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the amount of water (b) the same window (c) the same white paper (d) the same glass
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the same white paper (c) the time of day (d) brightness of rainbow
8. 8.🌈 In VIBGYOR, what number colour is green?
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
11. 11.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
12. 12.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
16. 16.🌈 In VIBGYOR, what number colour is orange?
17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
19. 19.True or false: a mirror is needed for the water rainbow. (a) False (b) True
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) True (b) False
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) the same glass (c) brightness of rainbow
22. 22.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
24. 24.True or false: a balloon is needed for the water rainbow. (a) True (b) False
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) bright sunlight (d) a sunny window
26. 26.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) turmeric powder (d) a sunny window
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
35. 35.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
36. 36.🌈 In VIBGYOR, what number colour is indigo?
37. 37.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a sheet of white paper (d) a clear glass of water
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a mirror (d) bright sunlight
40. 40.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a balloon (d) yeast

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