Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 275 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a balloon (d) a sheet of white paper
2. 2.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
5. 5.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a magnet (d) bright sunlight
6. 6.⚖️ 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
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
9. 9.🌈 In VIBGYOR, what number colour is yellow?
10. 10.🌈 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
11. 11.⚖️ 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
12. 12.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
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.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
16. 16.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
19. 19.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
20. 20.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
21. 21.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
24. 24.🛟 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
25. 25.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
26. 26.True or false: a balloon is needed for the water rainbow. (a) False (b) True
27. 27.🌈 In VIBGYOR, what number colour is violet?
28. 28.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
29. 29.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
30. 30.⚖️ 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 white paper (b) the amount of water (c) the time of day (d) brightness of rainbow
31. 31.⚖️ 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
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 kept the same. (a) False (b) True
33. 33.⚖️ 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 white paper (c) the time of day (d) brightness of rainbow
34. 34.⚖️ 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
35. 35.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
36. 36.True or false: a mirror is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a sunny window (d) a battery cell
38. 38.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) yeast (d) a clear glass of water
39. 39.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a magnet (d) a balloon
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False

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