Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 180 · 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.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
2. 2.🧺 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) yeast
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
4. 4.🌈 In VIBGYOR, what number colour is blue?
5. 5.⚖️ 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 same window (c) the amount of water
6. 6.⚖️ 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) brightness of rainbow (c) the same glass
7. 7.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In VIBGYOR, what number colour is red?
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a battery cell
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a sunny window
11. 11.⚖️ 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 change it (c) we measure it
12. 12.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
16. 16.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) yeast (d) a battery cell
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a magnet (d) a sheet of white paper
18. 18.🧺 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) a balloon (d) bright sunlight
19. 19.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
20. 20.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
21. 21.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) turmeric powder (d) a mirror
22. 22.True or false: yeast is needed for the water rainbow. (a) False (b) True
23. 23.⚖️ 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 glass (b) brightness of rainbow (c) the amount of water (d) the same window
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a balloon (d) yeast
26. 26.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
27. 27.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
28. 28.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
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 window”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ 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
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.⚖️ 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 time of day (c) brightness of rainbow
33. 33.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
34. 34.⚖️ 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) the same white paper (c) brightness of rainbow (d) the same glass
35. 35.🌈 How many colours do we name in a rainbow (VIBGYOR)?
36. 36.⚖️ 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) False (b) True
37. 37.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
38. 38.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
40. 40.🌈 In VIBGYOR, what number colour is green?

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