Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 800 · 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 sheet of white paper (b) a battery cell (c) a balloon (d) a mirror
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
3. 3.⚖️ 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
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a balloon (d) a sheet of white paper
5. 5.⚖️ 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) the same window (d) brightness of rainbow
6. 6.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
7. 7.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
10. 10.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
11. 11.⚖️ 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
12. 12.🌈 In VIBGYOR, what number colour is green?
13. 13.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
14. 14.🌈 In VIBGYOR, what number colour is violet?
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a mirror
16. 16.⚖️ 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
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
19. 19.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a balloon (d) turmeric powder
20. 20.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
21. 21.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a balloon (d) turmeric powder
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.⚖️ 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
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
26. 26.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
27. 27.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
28. 28.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
29. 29.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
31. 31.True or false: yeast is not needed for the water rainbow. (a) False (b) True
32. 32.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water (d) the same white paper
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) bright sunlight
35. 35.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
37. 37.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
38. 38.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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