Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 62 · 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 white paper”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
5. 5.🔮 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
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sheet of white paper
7. 7.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) yeast (c) a balloon (d) a battery cell
8. 8.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) turmeric powder (d) a sunny window
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) yeast (d) bright sunlight
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sunny window (d) bright sunlight
12. 12.🌈 In VIBGYOR, what number colour is blue?
13. 13.🌈 In VIBGYOR, what number colour is red?
14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a battery cell (d) a sunny window
15. 15.☀️ 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
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (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 what we measure? (a) the amount of water (b) the same glass (c) brightness of rainbow (d) the time of day
18. 18.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a battery cell (d) a balloon
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 the one thing we change. (a) False (b) True
20. 20.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) stare at the Sun (d) look at it in a mirror
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
23. 23.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
25. 25.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) in front of you (d) under the ground
26. 26.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
27. 27.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
28. 28.🌈 How many colours do we name in a rainbow (VIBGYOR)?
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 keep it the same (b) we measure it (c) we change it
30. 30.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) a clear glass of water
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) True (b) False
36. 36.⚖️ 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 glass (c) brightness of rainbow
37. 37.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water

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