Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 893 · 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 measure it (c) we change it
2. 2.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) reflection (d) magnetism
3. 3.🌈 In VIBGYOR, what number colour is orange?
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) turmeric powder
5. 5.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) turmeric powder (d) a sunny window
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 what we measure. (a) False (b) True
7. 7.🌈 In VIBGYOR, what number colour is green?
8. 8.🔮 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
9. 9.⚖️ 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) the same window (c) the amount of water (d) the same white paper
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) bright sunlight (d) a sheet of white paper
12. 12.⚖️ 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 white paper (c) brightness of rainbow
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a magnet (d) a mirror
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sheet of white paper (d) bright sunlight
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
18. 18.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.🔮 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
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
26. 26.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
27. 27.⚖️ 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 time of day (b) brightness of rainbow (c) the same white paper (d) the same window
28. 28.⚖️ 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
29. 29.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
30. 30.🌈 In VIBGYOR, what number colour is yellow?
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a battery cell (d) a sunny window
32. 32.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
33. 33.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
34. 34.True or false: yeast is not needed for the water rainbow. (a) False (b) True
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a clear glass of water
36. 36.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
39. 39.🌈 In VIBGYOR, what number colour is red?
40. 40.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) turmeric powder (d) a sheet of white paper

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