Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 222 · 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.☀️ 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
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a battery cell (d) a mirror
4. 4.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a mirror (d) a sheet of white paper
6. 6.⚖️ 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) brightness of rainbow (c) the time of day (d) the amount of water
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a magnet
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🧺 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) turmeric powder
13. 13.🌈 In VIBGYOR, what number colour is orange?
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a battery cell
15. 15.🛟 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
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water
17. 17.⚖️ 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 same glass
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 window”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
22. 22.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
23. 23.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a clear glass of water
25. 25.🌈 In VIBGYOR, what number colour is yellow?
26. 26.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
27. 27.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
28. 28.⚖️ 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) False (b) True
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
31. 31.⚖️ 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
32. 32.🌈 In VIBGYOR, what number colour is green?
33. 33.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
35. 35.🧺 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) a balloon (d) a clear glass of water
36. 36.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a balloon (d) bright sunlight
37. 37.⚖️ 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 same white paper (b) brightness of rainbow (c) the amount of water
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
39. 39.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) violet (d) blue

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