Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 239 · 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 “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
6. 6.🌈 In VIBGYOR, what number colour is indigo?
7. 7.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) a clear glass of water
9. 9.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a magnet (d) a balloon
11. 11.⚖️ 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
12. 12.⚖️ 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 time of day (b) brightness of rainbow (c) the same window (d) the amount of water
13. 13.🌈 In VIBGYOR, what number colour is blue?
14. 14.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
16. 16.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🔮 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) snow falling (d) a magnet
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) turmeric powder
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
22. 22.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
23. 23.🧺 Do we need yeast 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? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
26. 26.⚖️ 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 measure it (c) we change it
27. 27.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a clear glass of water (d) turmeric powder
28. 28.🌈 In VIBGYOR, what number colour is orange?
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a magnet (d) a sunny window
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
32. 32.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
33. 33.⚖️ 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 time of day (c) the same glass (d) the amount of water
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
35. 35.🌈 In VIBGYOR, what number colour is violet?
36. 36.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
38. 38.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the time of day
40. 40.🧺 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 clear glass of water (d) yeast

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