Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 781 · 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.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
3. 3.🌈 In VIBGYOR, what number colour is red?
4. 4.🧺 Do we need turmeric powder 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 same glass”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ 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
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
8. 8.⚖️ 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) True (b) False
9. 9.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a battery cell (d) a sheet of white paper
11. 11.🌈 In VIBGYOR, what number colour is indigo?
12. 12.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ 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
18. 18.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
19. 19.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) turmeric powder (d) a mirror
20. 20.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
21. 21.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
22. 22.True or false: yeast is not needed for the water rainbow. (a) False (b) True
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) yeast (d) a sunny window
25. 25.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ 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 white paper (b) brightness of rainbow (c) the same glass (d) the amount of water
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 what we measure. (a) True (b) False
29. 29.🌈 In VIBGYOR, what number colour is yellow?
30. 30.⚖️ 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) brightness of rainbow (d) the amount of water
31. 31.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
33. 33.🌈 In VIBGYOR, what number colour is blue?
34. 34.True or false: yeast is needed for the water rainbow. (a) False (b) True
35. 35.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
36. 36.True or false: a balloon is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a clear glass of water (d) a sunny window

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