Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 185 · 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) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a magnet
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? True or false: the same window is what we measure. (a) False (b) True
5. 5.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sunny window
6. 6.🛟 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 the Sun moves (d) so it turns blue
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 measure it (b) we change it (c) we keep it the same
8. 8.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
11. 11.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
12. 12.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
13. 13.True or false: a sheet of white paper 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? Which of these is kept the same? (a) the amount of water (b) the same white paper (c) brightness of rainbow
15. 15.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
16. 16.⚖️ 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
17. 17.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
18. 18.⚖️ 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
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
21. 21.⚖️ 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
22. 22.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same window
23. 23.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
26. 26.⚖️ 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) True (b) False
27. 27.🔮 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
28. 28.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
30. 30.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a clear glass of water (d) turmeric powder
31. 31.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sheet of white paper (d) a mirror
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sunny window
33. 33.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a mirror (d) bright sunlight
37. 37.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) bright sunlight (d) a battery cell
38. 38.🌈 In VIBGYOR, what number colour is red?
39. 39.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
40. 40.⚖️ 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 change it (c) we keep it the same

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