Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 314 · 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.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
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 kept the same. (a) True (b) False
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) bright sunlight
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
5. 5.🧺 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 battery cell (d) a sheet of white paper
6. 6.🌈 In VIBGYOR, what number colour is yellow?
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
10. 10.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
11. 11.🧺 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) a sheet of white paper (d) a balloon
12. 12.🌈 In VIBGYOR, what number colour is indigo?
13. 13.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a battery cell (d) bright sunlight
15. 15.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) yeast (d) a sheet of white paper
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
20. 20.🌈 In VIBGYOR, what number colour is orange?
21. 21.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
22. 22.⚖️ 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 same window
23. 23.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sheet of white paper (d) a balloon
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
25. 25.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
28. 28.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a sunny window (d) bright sunlight
33. 33.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.⚖️ 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
36. 36.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
37. 37.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) turmeric powder (d) a mirror
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
39. 39.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a sunny window (d) a balloon
40. 40.⚖️ 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

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