Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 754 · 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.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow (d) the same white paper
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) bright sunlight
3. 3.⚖️ 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) True (b) False
4. 4.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a balloon (d) a mirror
5. 5.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.🌈 In VIBGYOR, what number colour is indigo?
8. 8.🧺 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 battery cell
9. 9.⚖️ 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) brightness of rainbow (c) the same white paper (d) the amount of water
10. 10.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
12. 12.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
15. 15.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
16. 16.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
17. 17.🌈 In VIBGYOR, what number colour is yellow?
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a battery cell (d) a sheet of white paper
20. 20.🌈 In VIBGYOR, what number colour is violet?
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sunny window
23. 23.🌈 In VIBGYOR, what number colour is green?
24. 24.🔮 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
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
27. 27.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
28. 28.⚖️ 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
29. 29.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
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 white paper”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
32. 32.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) a sunny window (d) bright sunlight
34. 34.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
35. 35.⚖️ 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) False (b) True
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sunny window
37. 37.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
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 kept the same. (a) False (b) True
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
40. 40.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) straight above you (d) in front of you

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