Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 794 · 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.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) a magnet
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sunny window (d) a clear glass of water
4. 4.⚖️ 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
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a clear glass of water (d) a sunny window
6. 6.🌈 In VIBGYOR, what number colour is yellow?
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) a sunny window
10. 10.⚖️ 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 measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
12. 12.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) yeast (d) a clear glass of water
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.⚖️ 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
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.True or false: a sheet of white paper is not needed for the water rainbow. (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? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same white paper
21. 21.🌈 In VIBGYOR, what number colour is blue?
22. 22.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
24. 24.🌈 In VIBGYOR, what number colour is violet?
25. 25.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
27. 27.🌈 In VIBGYOR, what number colour is orange?
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
30. 30.⚖️ 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 time of day (b) the same glass (c) brightness of rainbow (d) the same window
31. 31.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
32. 32.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted
33. 33.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
35. 35.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) bright sunlight (d) turmeric powder
36. 36.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
37. 37.True or false: a balloon is needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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
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 what we measure. (a) True (b) False
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed

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