Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 113 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.🧺 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
3. 3.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
6. 6.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
7. 7.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In VIBGYOR, what number colour is red?
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 amount of water (b) the same white paper (c) the same window (d) the same glass
10. 10.⚖️ 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
11. 11.⚖️ 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 window (b) brightness of rainbow (c) the amount of water (d) the same white paper
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.⚖️ 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 measure it (c) we change it
14. 14.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a sheet of white paper (d) a battery cell
17. 17.🌈 In VIBGYOR, what number colour is indigo?
18. 18.🌈 In VIBGYOR, what number colour is yellow?
19. 19.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
20. 20.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
21. 21.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
23. 23.🌈 In VIBGYOR, what number colour is blue?
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) bright sunlight
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a balloon (d) bright sunlight
27. 27.True or false: a mirror is needed for the water rainbow. (a) True (b) False
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) yeast
29. 29.⚖️ 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
30. 30.⚖️ 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) True (b) False
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sunny window (d) a sheet of white paper
35. 35.🌈 In VIBGYOR, what number colour is violet?
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
39. 39.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False

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