Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 194 · 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: a battery cell is not needed for the water rainbow. (a) False (b) True
2. 2.⚖️ 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 glass (c) brightness of rainbow (d) the same white paper
3. 3.🧺 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) a battery cell (d) a sunny window
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
9. 9.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
10. 10.🌈 In VIBGYOR, what number colour is orange?
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a magnet
14. 14.⚖️ 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
15. 15.🌈 In VIBGYOR, what number colour is indigo?
16. 16.⚖️ 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
17. 17.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
18. 18.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
19. 19.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a battery cell (d) a mirror
20. 20.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) yeast (c) a magnet (d) a battery cell
21. 21.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a clear glass of water (d) yeast
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) turmeric powder (d) a sunny window
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
24. 24.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
25. 25.🌈 In VIBGYOR, what number colour is yellow?
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
29. 29.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
31. 31.🧺 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 balloon (d) a sheet of white paper
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is green?
34. 34.⚖️ 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
35. 35.True or false: a balloon is needed for the water rainbow. (a) True (b) False
36. 36.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
37. 37.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
38. 38.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
39. 39.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
40. 40.🌈 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

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