Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 732 · 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? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) bright sunlight
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) turmeric powder
5. 5.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a sunny window (d) turmeric powder
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
8. 8.⚖️ 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
9. 9.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
10. 10.🛟 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
11. 11.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
12. 12.⚖️ 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
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.⚖️ 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
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
16. 16.🛟 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 gets hot (d) so it turns blue
17. 17.⚖️ 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 white paper (b) the same window (c) the same glass (d) brightness of rainbow
18. 18.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a battery cell (d) a clear glass of water
21. 21.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
24. 24.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.⚖️ 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 keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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
30. 30.True or false: yeast is needed for the water rainbow. (a) False (b) True
31. 31.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a battery cell (d) a sheet of white paper
33. 33.True or false: bright sunlight is 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? Which of these is kept the same? (a) the time of day (b) the amount of water (c) brightness of rainbow
35. 35.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is blue?
37. 37.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a clear glass of water (d) a sunny window
39. 39.⚖️ 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 change it (c) we measure it
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sunny window

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