Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 989 · 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? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sheet of white paper (d) a mirror
3. 3.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
5. 5.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
6. 6.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
7. 7.🧺 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 battery cell (d) a clear glass of water
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
9. 9.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same glass
10. 10.🌈 In VIBGYOR, what number colour is red?
11. 11.🧺 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 clear glass of water (d) a balloon
12. 12.True or false: a mirror is needed for the water rainbow. (a) True (b) False
13. 13.🌈 In VIBGYOR, what number colour is yellow?
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
15. 15.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
16. 16.True or false: a balloon 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? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
18. 18.⚖️ 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 same white paper (c) the amount of water
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 mirror
20. 20.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
22. 22.🌈 In VIBGYOR, what number colour is indigo?
23. 23.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a clear glass of water (d) yeast
24. 24.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a mirror (d) bright sunlight
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.True or false: yeast is not needed for the water rainbow. (a) True (b) False
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) bright sunlight
33. 33.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) bright sunlight
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) yeast (d) bright sunlight
39. 39.⚖️ 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 change it (c) we keep it the same
40. 40.⚖️ 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

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