Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 683 · 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.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) turmeric powder (d) a clear glass of water
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
5. 5.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a clear glass of water
6. 6.🌈 In VIBGYOR, what number colour is blue?
7. 7.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) violet (d) blue
9. 9.🌈 In VIBGYOR, what number colour is yellow?
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? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) yeast (d) a balloon
14. 14.🌈 In VIBGYOR, what number colour is indigo?
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a magnet
17. 17.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
19. 19.⚖️ 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) brightness of rainbow (c) the amount of water (d) the time of day
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
21. 21.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
22. 22.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
23. 23.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a magnet (d) a sunny window
26. 26.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) yeast (d) a mirror
27. 27.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) yeast (d) a battery cell
28. 28.🌈 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
29. 29.True or false: a mirror is needed for the water rainbow. (a) False (b) True
30. 30.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) orange (d) red
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) bright sunlight (d) a sunny window
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
37. 37.🌈 In VIBGYOR, what number colour is green?
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper

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