Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 588 · 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 “brightness of rainbow”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
3. 3.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a magnet (d) a balloon
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.⚖️ 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 glass (b) the same window (c) brightness of rainbow (d) the time of day
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a mirror
7. 7.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) turmeric powder (d) yeast
10. 10.🌈 In VIBGYOR, what number colour is yellow?
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
12. 12.🧺 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) yeast
13. 13.⚖️ 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
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
15. 15.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
16. 16.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
17. 17.⚖️ 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
18. 18.⚖️ 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 time of day (b) the same glass (c) the same white paper (d) the amount of water
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
20. 20.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
21. 21.⚖️ 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
22. 22.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
23. 23.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
24. 24.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
27. 27.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
28. 28.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sunny window (d) bright sunlight
31. 31.🌈 In VIBGYOR, what number colour is red?
32. 32.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sunny window
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) yeast
34. 34.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) violet (d) blue
35. 35.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
36. 36.🌈 In VIBGYOR, what number colour is indigo?
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) brightness of rainbow (b) the same window (c) the amount of water
38. 38.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
39. 39.True or false: a mirror is needed for the water rainbow. (a) True (b) False
40. 40.True or false: yeast is not needed for the water rainbow. (a) False (b) True

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