Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 803 · 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) a magnet
2. 2.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
3. 3.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
4. 4.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
7. 7.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
8. 8.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a balloon
10. 10.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) bright sunlight (d) yeast
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
12. 12.🌈 In VIBGYOR, what number colour is orange?
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) the amount of water (b) the same glass (c) brightness of rainbow
14. 14.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
17. 17.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
18. 18.🧺 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 balloon
19. 19.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
22. 22.🌈 In VIBGYOR, what number colour is indigo?
23. 23.⚖️ 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 same window (d) the amount of water
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
26. 26.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) yeast (c) a mirror (d) turmeric powder
27. 27.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
30. 30.🌈 In VIBGYOR, what number colour is yellow?
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same window (c) the same white paper (d) the same glass
33. 33.⚖️ 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
34. 34.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
35. 35.🧺 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 sunny window
36. 36.🌈 In VIBGYOR, what number colour is blue?
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
39. 39.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
40. 40.🌈 How many colours do we name in a rainbow (VIBGYOR)?

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