Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 503 · 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) yeast (c) a sunny window (d) a clear glass of water
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
3. 3.True or false: yeast is needed for the water rainbow. (a) False (b) True
4. 4.⚖️ 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 glass (b) the same window (c) the time of day (d) the amount of water
5. 5.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
6. 6.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) a shadow of ice (d) snow falling
7. 7.🧺 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 magnet
8. 8.🌈 In VIBGYOR, what number colour is yellow?
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a mirror
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
13. 13.True or false: yeast is not needed for the water rainbow. (a) False (b) True
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
15. 15.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) bright sunlight (d) a sheet of white paper
16. 16.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
18. 18.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
19. 19.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
20. 20.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
21. 21.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
24. 24.🧺 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) a sheet of white paper (d) a battery cell
25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
26. 26.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a clear glass of water (d) a battery cell
27. 27.🧺 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) turmeric powder (d) a clear glass of water
28. 28.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
29. 29.True or false: a magnet is needed for the water rainbow. (a) True (b) False
30. 30.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a balloon
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
36. 36.🌈 In VIBGYOR, what number colour is indigo?
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) in front of you (d) under the ground

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