Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 182 · 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.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
2. 2.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
3. 3.⚖️ 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 same window (c) the amount of water (d) the same white paper
4. 4.⚖️ 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) False (b) True
5. 5.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
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 what we measure. (a) False (b) True
7. 7.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
8. 8.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a magnet (d) a sheet of white paper
9. 9.🌈 In VIBGYOR, what number colour is blue?
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 “the same white paper”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a clear glass of water
15. 15.🧺 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) bright sunlight (d) turmeric powder
16. 16.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) yeast (d) turmeric powder
17. 17.🌈 In VIBGYOR, what number colour is red?
18. 18.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
19. 19.🌈 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
20. 20.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
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) the same glass (b) brightness of rainbow (c) the same white paper (d) the time of day
22. 22.🛟 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
23. 23.🧺 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 sheet of white paper (d) a battery cell
24. 24.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) refraction (d) evaporation
25. 25.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
26. 26.🧺 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) bright sunlight (d) a balloon
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
28. 28.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a battery cell (d) yeast
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.⚖️ 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
32. 32.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
33. 33.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
34. 34.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.True or false: yeast is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
38. 38.🔮 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) snow falling (d) a magnet
39. 39.⚖️ 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
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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