Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 302 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
2. 2.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a magnet (d) a mirror
3. 3.True or false: a mirror is needed for the water rainbow. (a) True (b) False
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ 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
8. 8.⚖️ 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
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a balloon
10. 10.🌈 In VIBGYOR, what number colour is indigo?
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
14. 14.🌈 In VIBGYOR, what number colour is orange?
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sheet of white paper
18. 18.🌈 In VIBGYOR, what number colour is red?
19. 19.⚖️ 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 same window (b) the same glass (c) the time of day (d) the amount of water
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
21. 21.⚖️ 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
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
23. 23.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
25. 25.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In VIBGYOR, what number colour is blue?
27. 27.🌦️ 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
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same window
29. 29.⚖️ 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
30. 30.True or false: a magnet is needed for the water rainbow. (a) True (b) False
31. 31.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
32. 32.🧺 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) a sheet of white paper
33. 33.⚖️ 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 white paper (b) the same glass (c) the amount of water (d) brightness of rainbow
34. 34.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) bright sunlight (d) a magnet
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
39. 39.True or false: yeast is needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed

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