Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 573 · 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? True or false: the time of day is what we measure. (a) True (b) False
2. 2.True or false: a mirror is needed for the water rainbow. (a) False (b) True
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a sheet of white paper (d) bright sunlight
4. 4.🌈 In VIBGYOR, what number colour is indigo?
5. 5.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
6. 6.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
7. 7.⚖️ 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) the time of day (c) brightness of rainbow
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.⚖️ 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 keep it the same (c) we change it
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 change it (b) we keep it the same (c) we measure it
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.⚖️ 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
13. 13.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
14. 14.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
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 keep it the same (b) we measure it (c) we change it
17. 17.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) turmeric powder (c) a clear glass of water (d) yeast
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🧺 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 sunny window (d) a magnet
23. 23.⚖️ 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
24. 24.🧺 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
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) yeast (d) a clear glass of water
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.⚖️ 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
31. 31.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
33. 33.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
34. 34.⚖️ 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) 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 same white paper is the one thing we change. (a) True (b) False
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sunny window (d) bright sunlight
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
38. 38.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
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 the one thing we change. (a) False (b) True
40. 40.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True

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