Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 372 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a magnet
4. 4.🛟 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
5. 5.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a balloon (d) a magnet
6. 6.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
7. 7.⚖️ 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) True (b) False
8. 8.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the paper makes colours (d) the glass is painted
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
11. 11.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a balloon (c) a magnet (d) a mirror
12. 12.🌈 In VIBGYOR, what number colour is yellow?
13. 13.☀️ 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
14. 14.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
17. 17.🌈 In VIBGYOR, what number colour is orange?
18. 18.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
19. 19.🧺 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 magnet
20. 20.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) a sheet of white paper
22. 22.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a magnet (d) a clear glass of water
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) bright sunlight (b) a clear glass of water (c) a battery cell (d) a sunny window
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 change it (b) we measure it (c) we keep it the same
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.🌈 In VIBGYOR, what number colour is green?
28. 28.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
29. 29.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a mirror (d) a sunny window
31. 31.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a balloon (d) a battery cell
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 kept the same. (a) False (b) True
33. 33.⚖️ 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) the amount of water (c) brightness of rainbow (d) the same glass
34. 34.True or false: yeast is needed for the water rainbow. (a) True (b) False
35. 35.🌈 In VIBGYOR, what number colour is indigo?
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a clear glass of water (d) a sheet of white paper
37. 37.⚖️ 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 same window
38. 38.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
40. 40.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True

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