Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 187 · 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) bright sunlight (b) a balloon (c) a sheet of white paper (d) a clear glass of water
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
3. 3.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
4. 4.⚖️ 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 amount of water (c) the same window (d) the time of day
5. 5.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
6. 6.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
7. 7.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) yeast (c) a battery cell (d) turmeric powder
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
13. 13.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a magnet
14. 14.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
15. 15.🌈 In VIBGYOR, what number colour is blue?
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
18. 18.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
20. 20.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
21. 21.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
22. 22.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
23. 23.True or false: a magnet is needed for the water rainbow. (a) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
26. 26.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) a sunny window
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) yeast (d) bright sunlight
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
31. 31.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow (d) the same white paper
32. 32.⚖️ 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) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is orange?
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
36. 36.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
37. 37.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) turmeric powder
39. 39.⚖️ 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) False (b) True
40. 40.⚖️ 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

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