Rainbow Science Experiment Worksheet

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

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