Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 331 · 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 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
2. 2.🌈 In VIBGYOR, what number colour is blue?
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) yeast
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
7. 7.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
8. 8.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
9. 9.🧺 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 mirror (d) a sheet of white paper
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 white paper (b) brightness of rainbow (c) the same window (d) the amount of water
11. 11.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a balloon (d) yeast
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
13. 13.⚖️ 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) False (b) True
14. 14.🌈 In VIBGYOR, what number colour is red?
15. 15.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
16. 16.⚖️ 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 time of day (c) 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 glass is kept the same. (a) False (b) True
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a clear glass of water
19. 19.⚖️ 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) False (b) True
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
22. 22.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) yeast (d) a magnet
23. 23.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
25. 25.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
28. 28.☀️ 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
29. 29.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a sunny window (d) a battery cell
30. 30.🧺 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 battery cell (d) a sunny window
31. 31.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
32. 32.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.🛟 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
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
39. 39.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) turmeric powder (d) a battery cell
40. 40.⚖️ 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 measure it (b) we change it (c) we keep it the same

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