Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 214 · 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) needed (b) not needed
2. 2.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) magnetism (d) reflection
3. 3.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
5. 5.⚖️ 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
6. 6.⚖️ 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 amount of water (c) the same window
7. 7.True or false: yeast is needed for the water rainbow. (a) True (b) False
8. 8.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) a sheet of white paper
11. 11.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) yeast (d) turmeric powder
12. 12.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a sunny window (d) a magnet
13. 13.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the same glass
14. 14.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
15. 15.🧺 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) bright sunlight (d) a battery cell
16. 16.🌈 In VIBGYOR, what number colour is indigo?
17. 17.True or false: a balloon is needed for the water rainbow. (a) True (b) False
18. 18.🧺 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) turmeric powder (d) a sunny window
19. 19.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
23. 23.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
24. 24.🌈 In VIBGYOR, what number colour is violet?
25. 25.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
26. 26.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a sunny window
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
31. 31.🌈 In VIBGYOR, what number colour is yellow?
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) violet (d) orange
33. 33.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a magnet (d) turmeric powder
34. 34.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
35. 35.⚖️ 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) True (b) False
36. 36.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
37. 37.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
38. 38.⚖️ 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
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) True (b) False
40. 40.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True

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