Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 705 · 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? True or false: the time of day is the one thing we change. (a) True (b) False
2. 2.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
3. 3.🌈 In VIBGYOR, what number colour is orange?
4. 4.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
5. 5.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
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.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a battery cell (d) a balloon
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
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) brightness of rainbow (b) the amount of water (c) the same white paper (d) the same glass
11. 11.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
12. 12.🌈 In VIBGYOR, what number colour is indigo?
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
14. 14.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
15. 15.⚖️ 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 window (b) brightness of rainbow (c) the amount of water
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
17. 17.⚖️ 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 window (b) brightness of rainbow (c) the same glass (d) the amount of water
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 change it (b) we measure it (c) we keep it the same
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a mirror (d) a balloon
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
22. 22.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a sunny window (d) a sheet of white paper
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a sheet of white paper (d) a clear glass of water
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
28. 28.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
29. 29.⚖️ 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
30. 30.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sunny window (c) a clear glass of water (d) bright sunlight
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
36. 36.True or false: a mirror is needed for the water rainbow. (a) True (b) False
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a magnet (d) bright sunlight
38. 38.🌈 In VIBGYOR, what number colour is blue?
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun

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