Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 326 · 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) never look at the Sun (c) look at it through glass (d) look at it in a mirror
2. 2.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) tiny bits of dust (d) only yellow light
3. 3.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a sunny window
5. 5.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
6. 6.⚖️ 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
7. 7.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
8. 8.🛟 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 does not fall (d) so it turns blue
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
10. 10.🧺 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 clear glass of water (d) a balloon
11. 11.🌈 In VIBGYOR, what number colour is indigo?
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
13. 13.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
14. 14.⚖️ 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
15. 15.🧺 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 battery cell (d) a clear glass of water
16. 16.True or false: a mirror is needed for the water rainbow. (a) True (b) False
17. 17.⚖️ 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
18. 18.⚖️ 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) True (b) False
19. 19.True or false: yeast is needed for the water rainbow. (a) False (b) True
20. 20.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
21. 21.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a mirror
26. 26.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a balloon (d) bright sunlight
27. 27.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
29. 29.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) bright sunlight (d) a sheet of white paper
32. 32.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a balloon (d) a mirror
34. 34.True or false: yeast is not needed for the water rainbow. (a) False (b) True
35. 35.🌈 In VIBGYOR, what number colour is orange?
36. 36.True or false: a balloon is needed for the water rainbow. (a) False (b) True
37. 37.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sheet of white paper (d) a clear glass of water
40. 40.⚖️ 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 measure it (c) we change it

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