Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 856 · 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.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a magnet (d) a sheet of white paper
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
5. 5.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a mirror
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) bright sunlight (d) a clear glass of water
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
12. 12.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) bright sunlight (d) a clear glass of water
14. 14.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) in front of you (c) under the ground (d) straight above you
15. 15.🌈 In VIBGYOR, what number colour is green?
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) bright sunlight (d) a clear glass of water
17. 17.🌈 In VIBGYOR, what number colour is indigo?
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.True or false: a magnet is needed for the water rainbow. (a) False (b) True
20. 20.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) a mirror (d) a clear glass of water
21. 21.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a sunny window (d) bright sunlight
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
24. 24.🌈 In VIBGYOR, what number colour is yellow?
25. 25.🌈 In VIBGYOR, what number colour is orange?
26. 26.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
28. 28.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sunny window
31. 31.⚖️ 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 white paper (b) the amount of water (c) the same window (d) the same glass
32. 32.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) bright sunlight (d) yeast
35. 35.⚖️ 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) False (b) True
36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
37. 37.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) turmeric powder (d) a clear glass of water
39. 39.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
40. 40.⚖️ 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

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