Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 944 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
2. 2.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
4. 4.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
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 measure it (b) we keep it the same (c) we change it
6. 6.⚖️ 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) True (b) False
7. 7.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a battery cell (d) a sunny window
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) yeast
13. 13.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
14. 14.🌈 In VIBGYOR, what number colour is red?
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.⚖️ 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
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
18. 18.True or false: yeast is not needed for the water rainbow. (a) False (b) True
19. 19.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) turmeric powder (d) a clear glass of water
20. 20.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
21. 21.🌈 In VIBGYOR, what number colour is orange?
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.🌈 In VIBGYOR, what number colour is green?
24. 24.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
25. 25.🧺 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
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
27. 27.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) orange (d) red
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) turmeric powder
30. 30.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) green (d) blue
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 window”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.🧺 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 clear glass of water (d) bright sunlight
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
35. 35.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
36. 36.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) turmeric powder (d) a mirror
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
38. 38.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a mirror is needed for the water rainbow. (a) True (b) False
40. 40.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True

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