Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 149 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
2. 2.⚖️ 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
3. 3.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
4. 4.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
8. 8.⚖️ 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 window (b) the same glass (c) the amount of water (d) brightness of rainbow
9. 9.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a sheet of white paper (d) a magnet
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) a sunny window (d) bright sunlight
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) yeast
14. 14.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) red (d) yellow
15. 15.True or false: a magnet is needed for the water rainbow. (a) False (b) True
16. 16.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
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 measure it (b) we keep it the same (c) we change it
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
19. 19.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
20. 20.True or false: a balloon is needed for the water rainbow. (a) False (b) True
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 the one thing we change. (a) True (b) False
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
24. 24.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
25. 25.⚖️ 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 amount of water (b) the same white paper (c) the same glass (d) brightness of rainbow
26. 26.🌈 In VIBGYOR, what number colour is blue?
27. 27.🌈 In VIBGYOR, what number colour is orange?
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? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
31. 31.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a balloon (d) bright sunlight
32. 32.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) a clear glass of water
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a clear glass of water (d) a mirror
39. 39.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sunny window (c) yeast (d) a magnet

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