Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 900 · 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? True or false: the same glass is kept the same. (a) False (b) True
2. 2.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
5. 5.🌈 In VIBGYOR, what number colour is indigo?
6. 6.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a battery cell (d) a magnet
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) a sheet of white paper
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a battery cell (d) a clear glass of water
10. 10.⚖️ 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) the same white paper (d) brightness of rainbow
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) bright sunlight
12. 12.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
13. 13.⚖️ 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 time of day (c) the amount of water
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
15. 15.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
16. 16.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sunny window (d) a clear glass of water
17. 17.🌈 In VIBGYOR, what number colour is violet?
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
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 glass”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
21. 21.🌈 In VIBGYOR, what number colour is red?
22. 22.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a magnet (d) a mirror
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
24. 24.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
25. 25.⚖️ 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 amount of water (b) brightness of rainbow (c) the same window
26. 26.⚖️ 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) True (b) False
27. 27.⚖️ 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
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
29. 29.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
30. 30.True or false: a mirror is needed for the water rainbow. (a) True (b) False
31. 31.True or false: a balloon is needed for the water rainbow. (a) False (b) True
32. 32.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
39. 39.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
40. 40.⚖️ 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) True (b) False

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