Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 447 · 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.⚖️ 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 change it (b) we measure it (c) we keep it the same
2. 2.🌈 In VIBGYOR, what number colour is blue?
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
4. 4.True or false: yeast is not needed for the water rainbow. (a) True (b) False
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
6. 6.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
8. 8.🔮 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
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a sunny window (d) turmeric powder
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
11. 11.⚖️ 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) the same white paper
12. 12.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a clear glass of water (d) yeast
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
16. 16.⚖️ 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 window (b) brightness of rainbow (c) the same glass (d) the amount of water
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
18. 18.True or false: a balloon is needed for the water rainbow. (a) True (b) False
19. 19.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
20. 20.⚖️ 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 measure it (c) we change it
21. 21.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
22. 22.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a clear glass of water
24. 24.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
25. 25.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
26. 26.🌈 In VIBGYOR, what number colour is indigo?
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
28. 28.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
30. 30.🌈 In VIBGYOR, what number colour is orange?
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a magnet (d) a battery cell
34. 34.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) bright sunlight (d) a sheet of white paper
37. 37.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
38. 38.⚖️ 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) brightness of rainbow (c) the same window
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a mirror (d) a sunny window
40. 40.🌈 In VIBGYOR, what number colour is red?

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