Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 393 · 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: brightness of rainbow is kept the same. (a) True (b) False
2. 2.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
5. 5.⚖️ 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 glass (b) the same white paper (c) the same window (d) the amount of water
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the time of day
8. 8.🌈 In VIBGYOR, what number colour is green?
9. 9.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
10. 10.True or false: a clear glass of water is not 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? Which of these is kept the same? (a) brightness of rainbow (b) the same white paper (c) the amount of water
12. 12.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) yellow (d) red
13. 13.🛟 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 turns blue (d) so it gets hot
14. 14.True or false: a balloon is needed for the water rainbow. (a) True (b) False
15. 15.True or false: yeast is needed for the water rainbow. (a) True (b) False
16. 16.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
17. 17.⚖️ 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 same window (c) brightness of rainbow
18. 18.🌈 In VIBGYOR, what number colour is red?
19. 19.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
20. 20.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
21. 21.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a battery cell (d) a balloon
22. 22.⚖️ 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 keep it the same (c) we change it
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a battery cell
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a balloon
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
27. 27.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a mirror
29. 29.⚖️ 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
30. 30.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
32. 32.🌈 In VIBGYOR, what number colour is orange?
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) brightness of rainbow (b) the amount of water (c) the same glass
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a magnet
37. 37.⚖️ 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
38. 38.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
39. 39.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
40. 40.🌈 In VIBGYOR, what number colour is violet?

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