Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 882 · 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.🌈 In VIBGYOR, what number colour is violet?
2. 2.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
3. 3.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we change it (b) we measure it (c) we keep it the same
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 change it (c) we keep it the same
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sunny window
10. 10.⚖️ 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 same window (d) the time of day
11. 11.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
12. 12.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
15. 15.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
16. 16.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a clear glass of water (d) a sunny window
17. 17.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a sunny window (d) a clear glass of water
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) a clear glass of water (d) a sunny window
19. 19.⚖️ 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 change it (b) we measure it (c) we keep it the same
20. 20.⚖️ 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) the same glass (c) brightness of rainbow (d) the amount of water
21. 21.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) water splits the light (d) the paper makes colours
22. 22.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
23. 23.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a battery cell (d) a balloon
24. 24.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
25. 25.🌈 In VIBGYOR, what number colour is indigo?
26. 26.⚖️ 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
27. 27.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
28. 28.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) a battery cell (d) a sunny window
31. 31.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
32. 32.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
33. 33.🌈 In VIBGYOR, what number colour is red?
34. 34.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a balloon (d) a battery cell
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a battery cell
36. 36.⚖️ 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
37. 37.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) violet (d) red
38. 38.🌈 In VIBGYOR, what number colour is green?
39. 39.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
40. 40.⚖️ 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 keep it the same (c) we measure it

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