Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 479 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a sunny window
2. 2.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
6. 6.⚖️ 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
7. 7.True or false: a balloon is needed for the water rainbow. (a) True (b) False
8. 8.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.⚖️ 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 measure it (c) we change it
11. 11.⚖️ 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 glass (c) the same window (d) brightness of rainbow
12. 12.🌈 In VIBGYOR, what number colour is violet?
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sunny window (c) a clear glass of water (d) bright sunlight
14. 14.🌈 In VIBGYOR, what number colour is blue?
15. 15.⚖️ 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
16. 16.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
18. 18.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
19. 19.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
21. 21.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
22. 22.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a mirror (d) a magnet
23. 23.⚖️ 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
24. 24.🧺 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 balloon (d) a sunny window
25. 25.True or false: yeast is not needed for the water rainbow. (a) False (b) True
26. 26.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) behind you (d) straight above you
27. 27.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
28. 28.⚖️ 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) brightness of rainbow (b) the same glass (c) the same window (d) the amount of water
29. 29.⚖️ 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
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) bright sunlight
32. 32.🌈 In VIBGYOR, what number colour is indigo?
33. 33.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) a balloon
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
36. 36.🌈 In VIBGYOR, what number colour is red?
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
39. 39.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed

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