Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 419 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
2. 2.⚖️ 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 amount of water
3. 3.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🛟 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
6. 6.🌈 In VIBGYOR, what number colour is violet?
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
10. 10.True or false: a mirror is needed for the water rainbow. (a) False (b) True
11. 11.⚖️ 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
12. 12.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
13. 13.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
14. 14.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
15. 15.True or false: yeast is not needed for the water rainbow. (a) False (b) True
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a sunny window (d) bright sunlight
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
18. 18.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.⚖️ 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
21. 21.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) magnetism (d) evaporation
22. 22.⚖️ 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) False (b) True
23. 23.🌈 In VIBGYOR, what number colour is green?
24. 24.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sunny window
26. 26.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a mirror (d) a sheet of white paper
28. 28.⚖️ 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
29. 29.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a mirror (d) a sunny window
30. 30.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
31. 31.🌈 In VIBGYOR, what number colour is red?
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
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 what we measure. (a) False (b) True
34. 34.True or false: turmeric powder 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? Which of these is kept the same? (a) the time of day (b) brightness of rainbow (c) the amount of water
36. 36.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sheet of white paper (d) a mirror
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) bright sunlight
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a sheet of white paper (d) bright sunlight
40. 40.⚖️ 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) the same white paper (d) the same window

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