Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 839 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) a clear glass of water
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a mirror (d) a clear glass of water
3. 3.⚖️ 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) brightness of rainbow (c) the time of day (d) the same window
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) evaporation (d) magnetism
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
9. 9.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
10. 10.⚖️ 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 glass (b) brightness of rainbow (c) the same white paper (d) the amount of water
11. 11.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
12. 12.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a magnet (d) a battery cell
13. 13.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
15. 15.🧺 Do we need yeast 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? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) yeast (c) a balloon (d) a battery cell
20. 20.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sheet of white paper (d) a sunny window
22. 22.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
23. 23.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
24. 24.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
25. 25.🌈 In VIBGYOR, what number colour is blue?
26. 26.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a clear glass of water (d) a battery cell
27. 27.⚖️ 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
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
29. 29.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) a sheet of white paper (d) a sunny window
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 kept the same. (a) False (b) True
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
35. 35.⚖️ 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
36. 36.True or false: yeast is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 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 balloon
38. 38.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a sunny window (d) bright sunlight

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