Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 756 · 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.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
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 measure it (b) we keep it the same (c) we change it
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
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 same glass (b) the same window (c) the time of day (d) the amount of water
5. 5.⚖️ 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 white paper (c) brightness of rainbow
6. 6.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sunny window (d) a clear glass of water
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
9. 9.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a sheet of white paper (d) turmeric powder
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a magnet (c) bright sunlight (d) a sheet of white paper
13. 13.🔮 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
14. 14.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a battery cell (c) turmeric powder (d) a balloon
15. 15.⚖️ 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
16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
17. 17.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.⚖️ 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 same white paper (c) the time of day (d) the same glass
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a balloon (d) a sunny window
23. 23.⚖️ 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
24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
25. 25.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
26. 26.🌈 In VIBGYOR, what number colour is orange?
27. 27.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a mirror (d) bright sunlight
29. 29.🧺 Do we need turmeric powder 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? True or false: the same glass is the one thing we change. (a) False (b) True
31. 31.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a magnet (d) a battery cell
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
37. 37.🧺 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) yeast (d) bright sunlight
38. 38.True or false: yeast is needed for the water rainbow. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed

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