Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 798 · 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 of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) yeast
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) the rainbow fades (d) it turns brighter
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) bright sunlight
4. 4.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) snow falling (d) a magnet
6. 6.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
7. 7.🧺 Do we need a mirror 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 the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
9. 9.⚖️ 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
10. 10.⚖️ 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) the amount of water (c) brightness of rainbow
11. 11.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a balloon (d) a magnet
12. 12.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
13. 13.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
14. 14.🌈 In VIBGYOR, what number colour is orange?
15. 15.⚖️ 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 measure it (b) we change it (c) we keep it the same
16. 16.True or false: a magnet is not 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? Which of these is what we measure? (a) the same window (b) the amount of water (c) the same white paper (d) brightness of rainbow
18. 18.🌈 In VIBGYOR, what number colour is indigo?
19. 19.⚖️ 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
20. 20.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) yeast (d) a mirror
21. 21.True or false: a magnet is needed for the water rainbow. (a) False (b) True
22. 22.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
25. 25.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) yeast (d) bright sunlight
26. 26.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
27. 27.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
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 amount of water (b) the same window (c) the same white paper (d) brightness of rainbow
29. 29.⚖️ 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
30. 30.🌈 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
31. 31.☀️ 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
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) bright sunlight (d) a clear glass of water
33. 33.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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 amount of water (c) the same white paper
35. 35.⚖️ 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) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is red?
37. 37.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
39. 39.⚖️ 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) False (b) True
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) turmeric powder (d) bright sunlight

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