Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 597 · 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.True or false: yeast is needed for the water rainbow. (a) True (b) False
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
4. 4.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
5. 5.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a magnet
8. 8.🔮 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) snow falling (d) a magnet
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a balloon (d) a mirror
12. 12.⚖️ 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
13. 13.🧺 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) a sheet of white paper (d) a balloon
14. 14.⚖️ 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
15. 15.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
16. 16.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
21. 21.🌈 In VIBGYOR, what number colour is violet?
22. 22.⚖️ 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 white paper (c) brightness of rainbow
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a battery cell
24. 24.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
25. 25.⚖️ 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
26. 26.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
27. 27.🌈 In VIBGYOR, what number colour is blue?
28. 28.⚖️ 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 window (b) the same white paper (c) the same glass (d) brightness of rainbow
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) bright sunlight (d) a clear glass of water
30. 30.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
31. 31.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
32. 32.⚖️ 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
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
34. 34.🌈 In VIBGYOR, what number colour is yellow?
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
36. 36.🌈 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
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
38. 38.⚖️ 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 white paper (b) the same window (c) the amount of water (d) the time of day
39. 39.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a battery cell (d) bright sunlight

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