Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 309 · 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.🌈 In VIBGYOR, what number colour is red?
2. 2.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
3. 3.⚖️ 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) False (b) True
4. 4.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
5. 5.🔮 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
6. 6.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a magnet (d) a clear glass of water
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same glass (c) the time of day (d) the amount 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 measure it (b) we keep it the same (c) we change it
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.⚖️ 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) the same white paper (c) the amount of water (d) the same window
12. 12.🌈 In VIBGYOR, what number colour is yellow?
13. 13.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a sheet of white paper
14. 14.🛟 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 does not fall (d) so it turns blue
15. 15.🛟 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
16. 16.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
17. 17.⚖️ 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 same white paper (b) brightness of rainbow (c) the amount of water
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a balloon (d) bright sunlight
19. 19.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) straight above you (d) under the ground
20. 20.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
21. 21.⚖️ 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 same window (b) brightness of rainbow (c) the amount of water
22. 22.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a sunny window (d) a balloon
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a battery cell
24. 24.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
25. 25.⚖️ 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
26. 26.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
27. 27.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
28. 28.⚖️ 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) True (b) False
29. 29.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) snow falling (d) a small rainbow
30. 30.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
31. 31.🌈 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
32. 32.⚖️ 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 measure it (b) we keep it the same (c) we change it
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a clear glass of water (d) a sheet of white paper
34. 34.🧺 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 magnet (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 glass is the one thing we change. (a) True (b) False
36. 36.True or false: yeast is needed for the water rainbow. (a) True (b) False
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
38. 38.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
39. 39.🌈 In VIBGYOR, what number colour is indigo?
40. 40.True or false: yeast is not needed for the water rainbow. (a) False (b) True

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