Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 217 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sunny window
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
3. 3.🌦️ 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
4. 4.🌈 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
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
6. 6.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
8. 8.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
9. 9.True or false: yeast is needed for the water rainbow. (a) True (b) False
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.⚖️ 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
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 window”? (a) we measure it (b) we change 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? Which of these is what we measure? (a) the amount of water (b) the time of day (c) brightness of rainbow (d) the same window
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 what we measure. (a) True (b) False
16. 16.🧺 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) a battery cell (d) a sunny window
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) brightness of rainbow (b) the time of day (c) the amount of water
18. 18.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a balloon (d) a sheet of white paper
19. 19.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
21. 21.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
22. 22.🌈 In VIBGYOR, what number colour is blue?
23. 23.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
24. 24.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
25. 25.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) orange (d) violet
26. 26.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
27. 27.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a mirror (d) a clear glass of water
28. 28.⚖️ 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) brightness of rainbow (c) the same white paper (d) the time of day
29. 29.⚖️ 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 measure it (c) we keep it the same
30. 30.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
31. 31.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
32. 32.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
33. 33.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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
35. 35.🌈 In VIBGYOR, what number colour is orange?
36. 36.🌈 In VIBGYOR, what number colour is green?
37. 37.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
38. 38.🌈 In VIBGYOR, what number colour is violet?
39. 39.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
40. 40.⚖️ 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

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