Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 568 · 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? Which of these is the one thing we change? (a) the same white paper (b) the same glass (c) the amount of water (d) the time of day
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
4. 4.🔮 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
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) turmeric powder (d) a sunny window
7. 7.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
9. 9.⚖️ 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 white paper (c) brightness of rainbow
10. 10.True or false: a magnet 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 what we measure? (a) the amount of water (b) the same glass (c) brightness of rainbow (d) the time of day
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) refraction (d) evaporation
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
15. 15.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) under the ground (d) in front of you
16. 16.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) yeast (c) a balloon (d) a magnet
17. 17.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
22. 22.True or false: yeast is not needed for the water rainbow. (a) True (b) False
23. 23.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) turmeric powder (d) a battery cell
24. 24.🌈 In VIBGYOR, what number colour is violet?
25. 25.🌈 In VIBGYOR, what number colour is green?
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it floats away (d) it turns brighter
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) bright sunlight (d) a clear glass of water
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) bright sunlight
29. 29.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
30. 30.🧺 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
31. 31.⚖️ 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
32. 32.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) turmeric powder (d) bright sunlight
38. 38.⚖️ 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 time of day
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sunny window (d) a sheet of white paper
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) red (d) violet

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