Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 729 · 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? Which of these is kept the same? (a) the same white paper (b) the amount of water (c) brightness of rainbow
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
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 glass”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🌈 In VIBGYOR, what number colour is blue?
5. 5.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) a sheet of white paper (d) a sunny window
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
10. 10.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a battery cell (d) a mirror
11. 11.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) a sunny window
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a sunny window (d) a clear glass of water
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it floats away (d) it turns brighter
14. 14.🌈 In VIBGYOR, what number colour is indigo?
15. 15.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
16. 16.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
17. 17.⚖️ 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) brightness of rainbow (c) the same window (d) the same white paper
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a magnet
19. 19.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) a clear glass of water
25. 25.True or false: a magnet is needed for the water rainbow. (a) False (b) True
26. 26.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
27. 27.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a battery cell (d) a sheet of white paper
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
30. 30.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
35. 35.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a clear glass of water (d) a magnet
36. 36.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
38. 38.🌈 In VIBGYOR, what number colour is orange?
39. 39.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
40. 40.⚖️ 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) False (b) True

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