Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 572 · 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.⚖️ 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 keep it the same (b) we change it (c) we measure it
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🌈 In VIBGYOR, what number colour is yellow?
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
5. 5.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
6. 6.⚖️ 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 keep it the same (c) we change it
7. 7.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the paper makes colours (d) the water is coloured
8. 8.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a balloon
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 amount of water (b) brightness of rainbow (c) the same glass (d) the same white paper
11. 11.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
13. 13.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.🌈 In VIBGYOR, what number colour is blue?
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
17. 17.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
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 kept the same. (a) True (b) False
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
20. 20.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
21. 21.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
22. 22.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
24. 24.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a mirror (d) a clear glass of water
26. 26.⚖️ 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) brightness of rainbow (c) the same window
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
29. 29.🌈 In VIBGYOR, what number colour is indigo?
30. 30.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
31. 31.🧺 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 sunny window (d) bright sunlight
32. 32.True or false: a mirror is needed for the water rainbow. (a) False (b) True
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
36. 36.⚖️ 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) False (b) True
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
38. 38.⚖️ 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 white paper (d) the time of day
39. 39.True or false: turmeric powder is 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? Which of these is kept the same? (a) the amount of water (b) the same glass (c) brightness of rainbow

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