Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 541 · 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 change it (b) we keep it the same (c) we measure it
2. 2.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
3. 3.⚖️ 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) True (b) False
4. 4.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) only yellow light (d) tiny drops of water
5. 5.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) bright sunlight (d) a magnet
6. 6.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
7. 7.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a mirror (d) a battery cell
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a clear glass of water
9. 9.⚖️ 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
10. 10.🌈 In VIBGYOR, what number colour is violet?
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a balloon
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
15. 15.🌈 In VIBGYOR, what number colour is blue?
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (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? True or false: the same glass is what we measure. (a) False (b) True
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
20. 20.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
21. 21.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
22. 22.🌦️ 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
23. 23.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
24. 24.⚖️ 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 time of day (b) the same window (c) the same glass (d) the amount of water
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
26. 26.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
27. 27.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
28. 28.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) turmeric powder
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
32. 32.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
33. 33.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
34. 34.🧺 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
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a battery cell
36. 36.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a mirror (d) a battery cell
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
38. 38.🌈 In VIBGYOR, what number colour is green?
39. 39.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a sunny window

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