Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 43 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
2. 2.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a magnet (d) a mirror
3. 3.⚖️ 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) True (b) False
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sheet of white paper
5. 5.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
6. 6.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a magnet (d) bright sunlight
8. 8.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) only yellow light (d) tiny drops of water
9. 9.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
10. 10.⚖️ 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) True (b) False
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) a clear glass of water (d) bright sunlight
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) bright sunlight (d) a clear glass of water
13. 13.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same window
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.⚖️ 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
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
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 time of day (b) the same glass (c) the amount of water (d) the same window
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
21. 21.🌈 In VIBGYOR, what number colour is blue?
22. 22.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.🌈 In VIBGYOR, what number colour is green?
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
26. 26.🌈 How many colours do we name in a rainbow (VIBGYOR)?
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) bright sunlight
28. 28.🌈 In VIBGYOR, what number colour is red?
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
35. 35.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
36. 36.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
37. 37.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a sunny window (d) a magnet
38. 38.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed

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