Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 322 · 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.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
2. 2.🌈 In VIBGYOR, what number colour is indigo?
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
5. 5.🌈 In VIBGYOR, what number colour is orange?
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
7. 7.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
9. 9.🌦️ 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
10. 10.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a mirror (d) a sheet of white paper
11. 11.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a balloon (d) bright sunlight
12. 12.🔮 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
13. 13.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
15. 15.⚖️ 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) True (b) False
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a magnet (d) a sunny window
18. 18.⚖️ 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) the same white paper (c) the amount of water (d) brightness of rainbow
19. 19.⚖️ 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
20. 20.⚖️ 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) brightness of rainbow (b) the amount of water (c) the same glass (d) the time of day
21. 21.⚖️ 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
22. 22.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
25. 25.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
28. 28.🌈 In VIBGYOR, what number colour is violet?
29. 29.🧺 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 clear glass of water (d) a battery cell
30. 30.🌈 In VIBGYOR, what number colour is yellow?
31. 31.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a magnet (d) a mirror
32. 32.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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
34. 34.🧺 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) a sunny window (d) a balloon
35. 35.⚖️ 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
36. 36.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
37. 37.⚖️ 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
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight

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