Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 661 · 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 of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) turmeric powder
2. 2.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
9. 9.⚖️ 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) False (b) True
10. 10.⚖️ 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
11. 11.⚖️ 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 white paper (c) the amount of water (d) the same window
12. 12.True or false: yeast is not needed for the water rainbow. (a) True (b) False
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 same white paper (c) the amount of water
14. 14.⚖️ 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 window (b) the time of day (c) the amount of water (d) brightness of rainbow
15. 15.🧺 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
16. 16.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) turmeric powder (d) a balloon
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sunny window
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
19. 19.True or false: a mirror is needed for the water rainbow. (a) True (b) False
20. 20.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a battery cell (d) turmeric powder
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a mirror
22. 22.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
23. 23.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
24. 24.🌈 In VIBGYOR, what number colour is violet?
25. 25.🧺 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
26. 26.🌈 In VIBGYOR, what number colour is orange?
27. 27.True or false: yeast is needed for the water rainbow. (a) False (b) True
28. 28.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
29. 29.🛟 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
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a magnet
32. 32.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) 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 kept the same. (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) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is indigo?
37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the paper makes colours (d) the water is coloured
38. 38.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) orange (d) red
39. 39.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
40. 40.🌦️ 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

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