Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 852 · 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) never look at the Sun (d) look at it in a mirror
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a mirror
3. 3.⚖️ 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
4. 4.🌈 In VIBGYOR, what number colour is indigo?
5. 5.🌈 In VIBGYOR, what number colour is green?
6. 6.⚖️ 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 white paper (b) brightness of rainbow (c) the same glass (d) the same window
7. 7.🧺 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
8. 8.⚖️ 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 amount of water (b) the same glass (c) the same white paper (d) the same window
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
10. 10.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
11. 11.🔮 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
12. 12.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
13. 13.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a balloon (d) a clear glass of water
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) a sunny window
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a magnet
17. 17.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
18. 18.🧺 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 sheet of white paper (d) turmeric powder
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 what we measure. (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 amount of water”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
22. 22.🌈 How many colours do we name in a rainbow (VIBGYOR)?
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
24. 24.⚖️ 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
25. 25.⚖️ 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 same glass (c) the amount of water
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a clear glass of water (d) bright sunlight
27. 27.🌈 In VIBGYOR, what number colour is red?
28. 28.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a battery cell (d) a sunny window
29. 29.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a sunny window (d) a battery cell
30. 30.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
31. 31.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
32. 32.🌈 In VIBGYOR, what number colour is violet?
33. 33.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a sheet of white paper (d) a balloon
34. 34.⚖️ 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) True (b) False
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
36. 36.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) in front of you (d) behind you
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a battery cell (d) a clear glass of water
38. 38.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) magnets (d) prisms
39. 39.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
40. 40.🌈 In VIBGYOR, what number colour is blue?

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