Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 878 · 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.🌈 In VIBGYOR, what number colour is orange?
2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
3. 3.⚖️ 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) the time of day (c) brightness of rainbow (d) the amount of water
4. 4.⚖️ 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 same glass (b) the same window (c) the amount of water (d) the time of day
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
7. 7.⚖️ 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
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
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) bright sunlight (b) a sheet of white paper (c) a mirror (d) a clear glass of water
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.⚖️ 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
14. 14.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) turmeric powder
16. 16.⚖️ 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 amount of water (c) the time of day
17. 17.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a magnet (d) yeast
18. 18.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
19. 19.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
20. 20.🌈 In VIBGYOR, what number colour is green?
21. 21.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it floats away (d) it turns brighter
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) in front of you (d) behind you
24. 24.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
25. 25.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
26. 26.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
27. 27.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
29. 29.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
30. 30.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a battery cell
32. 32.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a balloon (d) a sheet of white paper
33. 33.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
34. 34.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a magnet
35. 35.True or false: a magnet is needed for the water rainbow. (a) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is indigo?
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
39. 39.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed

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