Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 67 · 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? Which of these is the one thing we change? (a) the same window (b) the amount of water (c) brightness of rainbow (d) the same white paper
2. 2.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
3. 3.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
4. 4.🔮 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
5. 5.🌈 In VIBGYOR, what number colour is orange?
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.True or false: a balloon is needed for the water rainbow. (a) False (b) True
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
11. 11.⚖️ 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
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
14. 14.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
15. 15.🌈 In VIBGYOR, what number colour is red?
16. 16.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a sheet of white paper (d) a battery cell
17. 17.⚖️ 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) True (b) False
18. 18.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
19. 19.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
20. 20.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sunny window (d) a sheet of white paper
21. 21.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
22. 22.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
24. 24.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a battery cell (d) a magnet
25. 25.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
26. 26.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) bright sunlight (d) a battery cell
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) bright sunlight (d) a clear glass of water
28. 28.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a clear glass of water
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sheet of white paper
31. 31.☀️ 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
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🌈 In VIBGYOR, what number colour is blue?
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 amount of water (b) brightness of rainbow (c) the time of day
35. 35.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
36. 36.⚖️ 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
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) bright sunlight (d) yeast
38. 38.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a magnet
40. 40.True or false: yeast is not needed for the water rainbow. (a) True (b) False

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