Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 644 · 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 sunny window for the water rainbow? (a) not needed (b) needed
2. 2.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
4. 4.🌈 In VIBGYOR, what number colour is violet?
5. 5.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
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 window”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) bright sunlight (d) a sheet of white paper
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a clear glass of water (d) a sheet of white paper
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.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
15. 15.🌈 In VIBGYOR, what number colour is green?
16. 16.⚖️ 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
17. 17.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
18. 18.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
19. 19.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
20. 20.⚖️ 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 amount of water (c) the same window (d) brightness of rainbow
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
24. 24.⚖️ 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 same white paper
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.True or false: a balloon is needed for the water rainbow. (a) False (b) True
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
28. 28.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
29. 29.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
30. 30.🛟 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 it gets hot (d) so the Sun moves
31. 31.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) a sheet of white paper (d) a clear glass of water
33. 33.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
34. 34.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a clear glass of water (d) a magnet
35. 35.⚖️ 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 glass (c) brightness of rainbow
36. 36.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
37. 37.⚖️ 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
38. 38.🌈 In VIBGYOR, what number colour is red?
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 battery cell
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue

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