Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 585 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sunny window (d) a sheet of white paper
4. 4.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a mirror (c) a balloon (d) a magnet
5. 5.🌈 In VIBGYOR, what number colour is orange?
6. 6.True or false: a magnet is needed for the water rainbow. (a) True (b) False
7. 7.🌈 In VIBGYOR, what number colour is violet?
8. 8.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
9. 9.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
10. 10.🧺 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
11. 11.⚖️ 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
12. 12.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
14. 14.⚖️ 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 time of day (c) brightness of rainbow (d) the amount of water
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 same window (b) the same glass (c) the same white paper (d) the amount of water
16. 16.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a balloon (d) a mirror
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) bright sunlight (d) a clear glass of water
18. 18.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
19. 19.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
21. 21.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
24. 24.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it does not fall (d) so it turns blue
25. 25.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) only yellow light (d) tiny bits of dust
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a balloon
28. 28.🛟 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
29. 29.🧺 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 battery cell (d) a sunny window
30. 30.⚖️ 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 white paper (c) the amount of water
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 white paper”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
33. 33.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a battery cell (d) a sheet of white paper
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.⚖️ 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 keep it the same (b) we change it (c) we measure it
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
37. 37.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) yeast (d) turmeric powder
38. 38.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
40. 40.⚖️ 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) False (b) True

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