Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 576 · 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 white paper”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the same glass (c) the amount of water
3. 3.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a mirror (d) yeast
4. 4.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
5. 5.⚖️ 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) True (b) False
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) turmeric powder (d) yeast
8. 8.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a sheet of white paper (d) bright sunlight
9. 9.⚖️ 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) True (b) False
10. 10.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
11. 11.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
12. 12.🌈 In VIBGYOR, what number colour is blue?
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
15. 15.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a magnet (d) a clear glass of water
16. 16.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
17. 17.⚖️ 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
18. 18.⚖️ 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
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a balloon (d) a sheet of white paper
21. 21.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
22. 22.🛟 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
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) yeast (d) bright sunlight
24. 24.⚖️ 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
25. 25.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.🛟 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
28. 28.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
31. 31.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
32. 32.⚖️ 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) the same white paper (c) brightness of rainbow (d) the amount of water
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
35. 35.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) tiny bits of dust (d) many colours mixed
36. 36.🌈 In VIBGYOR, what number colour is orange?
37. 37.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
38. 38.⚖️ 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
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) a sheet of white paper

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