Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 200 · 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 turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
2. 2.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
3. 3.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
4. 4.🧺 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 clear glass of water (d) a balloon
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
6. 6.⚖️ 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
7. 7.⚖️ 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) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🛟 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
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
11. 11.🌈 In VIBGYOR, what number colour is yellow?
12. 12.⚖️ 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) False (b) True
13. 13.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
14. 14.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
16. 16.⚖️ 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) brightness of rainbow (d) the amount of water
17. 17.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a balloon (d) a battery cell
18. 18.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
19. 19.⚖️ 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
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) the same glass (b) brightness of rainbow (c) the amount of water
21. 21.🌈 In VIBGYOR, what number colour is violet?
22. 22.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a mirror
25. 25.⚖️ 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
26. 26.🌈 In VIBGYOR, what number colour is blue?
27. 27.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
29. 29.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
30. 30.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚖️ 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) brightness of rainbow (c) the same white paper
34. 34.🧺 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) a clear glass of water (d) a battery cell
35. 35.🌈 In VIBGYOR, what number colour is red?
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
38. 38.⚖️ 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) True (b) False
39. 39.🌈 In VIBGYOR, what number colour is indigo?
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder

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