Rainbow Science Experiment Worksheet

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

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