Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 879 · 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.🌈 In VIBGYOR, what number colour is indigo?
3. 3.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.🌈 In VIBGYOR, what number colour is violet?
6. 6.⚖️ 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) True (b) False
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
8. 8.⚖️ 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
9. 9.🌈 In VIBGYOR, what number colour is blue?
10. 10.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
11. 11.⚖️ 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
12. 12.🛟 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 the Sun moves (d) so it gets hot
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sunny window
17. 17.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) yellow (d) red
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sheet of white paper
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
24. 24.True or false: a magnet is needed for the water rainbow. (a) False (b) True
25. 25.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) a clear glass of water (d) a mirror
26. 26.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
27. 27.🌈 How many colours do we name in a rainbow (VIBGYOR)?
28. 28.⚖️ 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) the same window (c) the time of day (d) the amount of water
29. 29.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
30. 30.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
32. 32.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
33. 33.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
34. 34.🌈 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
35. 35.⚖️ 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
36. 36.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
37. 37.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
38. 38.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a mirror (c) turmeric powder (d) yeast
39. 39.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a mirror (d) a clear glass of water

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