Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 619 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a battery cell
3. 3.⚖️ 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
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
5. 5.True or false: yeast is needed for the water rainbow. (a) False (b) True
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In VIBGYOR, what number colour is orange?
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
10. 10.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
11. 11.True or false: a magnet is needed for the water rainbow. (a) False (b) True
12. 12.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
13. 13.🧺 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 sunny window (d) a mirror
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
16. 16.⚖️ 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 time of day (b) brightness of rainbow (c) the same glass (d) the amount of water
17. 17.⚖️ 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) True (b) False
18. 18.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
21. 21.🧺 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 magnet (d) a sunny window
22. 22.⚖️ 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 white paper (c) the amount of water (d) the same glass
23. 23.🌈 In VIBGYOR, what number colour is red?
24. 24.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a mirror (d) bright sunlight
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
26. 26.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
28. 28.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) water splits the light (d) the paper makes colours
29. 29.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a balloon (d) a clear glass of water
30. 30.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.⚖️ 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
34. 34.⚖️ 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) True (b) False
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 time of day (c) brightness of rainbow
36. 36.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it floats away (d) it turns brighter
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
39. 39.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
40. 40.🌈 In VIBGYOR, what number colour is yellow?

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