Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 858 · 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? Which of these is what we measure? (a) the same glass (b) the amount of water (c) the same window (d) brightness of rainbow
2. 2.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
3. 3.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
7. 7.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a battery cell (d) a magnet
8. 8.🌈 In VIBGYOR, what number colour is yellow?
9. 9.🌈 In VIBGYOR, what number colour is green?
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.⚖️ 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 time of day (c) the same white paper (d) the amount of water
13. 13.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
14. 14.🌈 In VIBGYOR, what number colour is blue?
15. 15.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
16. 16.True or false: yeast is needed for the water rainbow. (a) False (b) True
17. 17.⚖️ 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) the amount of water (c) brightness of rainbow
18. 18.🌦️ 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
19. 19.⚖️ 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 measure it (c) we change it
20. 20.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) a clear glass of water (d) bright sunlight
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) yeast
23. 23.True or false: a balloon is needed for the water rainbow. (a) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sunny window (d) a clear glass of water
25. 25.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
26. 26.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
27. 27.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
28. 28.🛟 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 the Sun moves (d) so it turns blue
29. 29.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
30. 30.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
31. 31.🌈 In VIBGYOR, what number colour is orange?
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
33. 33.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
34. 34.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
35. 35.True or false: a magnet is needed for the water rainbow. (a) False (b) True
36. 36.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
37. 37.True or false: yeast is not needed for the water rainbow. (a) True (b) False
38. 38.🔮 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
39. 39.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
40. 40.True or false: a mirror is needed for the water rainbow. (a) True (b) False

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