Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 138 · 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 balloon for the water rainbow? (a) needed (b) not needed
2. 2.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
3. 3.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sunny window
9. 9.True or false: a magnet is needed for the water rainbow. (a) False (b) True
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a sunny window
11. 11.🌈 In VIBGYOR, what number colour is red?
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
13. 13.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sunny window
15. 15.⚖️ 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 white paper (b) the time of day (c) brightness of rainbow (d) the amount of water
16. 16.⚖️ 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
17. 17.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
18. 18.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🌈 In VIBGYOR, what number colour is violet?
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) a sunny window
23. 23.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) turmeric powder (d) a mirror
24. 24.⚖️ 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
25. 25.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a mirror (d) a sunny window
27. 27.🧺 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) bright sunlight (d) a balloon
28. 28.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a mirror (d) a magnet
29. 29.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
30. 30.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
31. 31.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
32. 32.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
33. 33.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
35. 35.🌈 In VIBGYOR, what number colour is yellow?
36. 36.🌈 In VIBGYOR, what number colour is orange?
37. 37.⚖️ 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 measure it (c) we change it
38. 38.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
40. 40.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False

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