Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 532 · 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.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
2. 2.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
5. 5.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sunny window (d) bright sunlight
7. 7.🌈 In VIBGYOR, what number colour is red?
8. 8.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
9. 9.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
10. 10.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
11. 11.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.⚖️ 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
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.⚖️ 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
16. 16.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) magnetism (d) evaporation
17. 17.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
18. 18.⚖️ 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 window (b) the same glass (c) the time of day (d) the amount of water
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
20. 20.⚖️ 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
21. 21.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow
22. 22.True or false: yeast is not needed for the water rainbow. (a) True (b) False
23. 23.🌈 In VIBGYOR, what number colour is yellow?
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a mirror
25. 25.⚖️ 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
26. 26.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
27. 27.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) yeast (d) a magnet
28. 28.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a sheet of white paper (d) a clear glass of water
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) bright sunlight
35. 35.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
36. 36.🛟 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
37. 37.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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 change it (c) we measure it
39. 39.⚖️ 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 keep it the same (b) we change it (c) we measure it
40. 40.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms

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