Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 915 · 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 happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
2. 2.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
3. 3.🌈 In VIBGYOR, what number colour is orange?
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
5. 5.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a clear glass of water (d) a mirror
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sunny window (d) a sheet of white paper
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) a sheet of white paper
9. 9.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
10. 10.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
11. 11.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) turmeric powder
13. 13.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
14. 14.⚖️ 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
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) a clear glass of water (d) bright sunlight
16. 16.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
17. 17.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) green (d) violet
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a sheet of white paper (d) a clear glass of water
19. 19.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) behind you (d) under the ground
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
21. 21.True or false: a magnet is needed for the water rainbow. (a) False (b) True
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
23. 23.⚖️ 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 glass (d) the amount of water
24. 24.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.⚖️ 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) True (b) False
28. 28.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a sheet of white paper (d) yeast
30. 30.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
31. 31.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
34. 34.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
35. 35.⚖️ 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) brightness of rainbow (b) the same glass (c) the same white paper (d) the amount of water
36. 36.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
37. 37.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sunny window (d) bright sunlight
40. 40.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a magnet (d) bright sunlight

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