Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 511 · 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.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
3. 3.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
5. 5.🌈 In VIBGYOR, what number colour is indigo?
6. 6.⚖️ 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 time of day (c) brightness of rainbow
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
9. 9.🌈 In VIBGYOR, what number colour is orange?
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a magnet (d) a sheet of white paper
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
13. 13.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
14. 14.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
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 kept the same. (a) False (b) True
16. 16.⚖️ 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 amount of water (c) the same white paper (d) brightness of rainbow
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
20. 20.🛟 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
21. 21.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
22. 22.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
23. 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a mirror (d) a sunny window
25. 25.True or false: yeast is not needed for the water rainbow. (a) True (b) False
26. 26.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
27. 27.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
28. 28.🌈 In VIBGYOR, what number colour is violet?
29. 29.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
31. 31.⚖️ 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 time of day (c) the same glass (d) brightness of rainbow
32. 32.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a mirror (d) a clear glass of water
34. 34.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) straight above you (d) under the ground
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
36. 36.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) yeast (d) a sheet of white paper
38. 38.🌈 In VIBGYOR, what number colour is yellow?
39. 39.⚖️ 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) True (b) False
40. 40.⚖️ 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 same white paper (c) the amount of water

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