Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 312 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) bright sunlight
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it turns blue (d) so it gets hot
5. 5.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
6. 6.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
7. 7.True or false: yeast is needed for the water rainbow. (a) False (b) True
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.🛟 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
10. 10.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.True or false: a magnet is needed for the water rainbow. (a) False (b) True
14. 14.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
15. 15.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
17. 17.⚖️ 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) True (b) False
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a battery cell (d) a sheet of white paper
20. 20.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
22. 22.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
23. 23.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
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 amount of water (b) the time of day (c) the same white paper (d) brightness of rainbow
25. 25.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a magnet
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.🌈 In VIBGYOR, what number colour is violet?
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? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.True or false: a balloon is needed for the water rainbow. (a) True (b) False
36. 36.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) turmeric powder
38. 38.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a clear glass of water (d) a balloon
39. 39.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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