Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 970 · 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 the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
4. 4.⚖️ 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 amount of water (b) the same glass (c) the same window (d) brightness of rainbow
5. 5.⚖️ 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 measure it (c) we keep it the same
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) yeast (d) turmeric powder
8. 8.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
10. 10.🌈 In VIBGYOR, what number colour is indigo?
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) turmeric powder
12. 12.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) the water is coloured (d) water splits the light
13. 13.⚖️ 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) True (b) False
14. 14.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
15. 15.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.⚖️ 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
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
19. 19.🔮 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
20. 20.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
21. 21.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
22. 22.True or false: a mirror is needed for the water rainbow. (a) False (b) True
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) a clear glass of water
24. 24.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) a battery cell
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) a clear glass of water
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 white paper”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) turmeric powder (d) a sunny window
30. 30.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a clear glass of water (d) a sunny window
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a mirror (d) a sunny window
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
34. 34.⚖️ 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 same window (b) brightness of rainbow (c) the amount of water
35. 35.⚖️ 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 glass (b) the same window (c) brightness of rainbow (d) the same white paper
36. 36.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) refraction (d) evaporation
37. 37.True or false: a magnet is needed for the water rainbow. (a) False (b) True
38. 38.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
39. 39.🌈 In VIBGYOR, what number colour is orange?
40. 40.⚖️ 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

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