Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 146 · 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 balloon (b) a mirror (c) a magnet (d) bright sunlight
2. 2.🌦️ 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
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.⚖️ 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 window (c) the same glass (d) brightness of rainbow
10. 10.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
11. 11.⚖️ 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
12. 12.⚖️ 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 window
13. 13.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
14. 14.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a sheet of white paper (d) a magnet
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 paper makes colours (d) the water is coloured
16. 16.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
17. 17.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) snow falling (d) a shadow of ice
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
20. 20.True or false: a balloon is needed for the water rainbow. (a) True (b) False
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a sunny window
24. 24.⚖️ 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
25. 25.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
27. 27.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
30. 30.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
31. 31.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
32. 32.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
33. 33.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a magnet (d) a sunny window
34. 34.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a clear glass of water (d) a magnet
35. 35.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
37. 37.🌈 In VIBGYOR, what number colour is red?
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
39. 39.⚖️ 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
40. 40.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False

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