Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 417 · 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: brightness of rainbow is what we measure. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
4. 4.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
9. 9.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
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 same glass (b) brightness of rainbow (c) the time of day (d) the same window
11. 11.⚖️ 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) False (b) True
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
13. 13.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a mirror (d) a battery cell
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
17. 17.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a sunny window (d) a sheet of white paper
20. 20.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) yeast (d) a sheet of white paper
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
25. 25.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
26. 26.🛟 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
27. 27.⚖️ 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 amount of water (b) the same white paper (c) the same glass (d) the time of day
28. 28.🌈 In VIBGYOR, what number colour is violet?
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a clear glass of water (d) bright sunlight
30. 30.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a sunny window (d) a balloon
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) turmeric powder (d) a clear glass of water
35. 35.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
36. 36.True or false: yeast is needed for the water rainbow. (a) False (b) True
37. 37.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
38. 38.🌈 In VIBGYOR, what number colour is indigo?
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
40. 40.⚖️ 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

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