Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 813 · 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) look at it in a mirror (c) look at it through glass (d) never look at the Sun
2. 2.🧺 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 battery cell
3. 3.True or false: yeast is not needed for the water rainbow. (a) True (b) False
4. 4.🌈 In VIBGYOR, what number colour is yellow?
5. 5.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
6. 6.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) yeast (d) bright sunlight
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a battery cell (d) a sheet of white paper
10. 10.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
11. 11.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
13. 13.True or false: a magnet is needed for the water rainbow. (a) False (b) True
14. 14.🔮 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
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
17. 17.🧺 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 balloon
18. 18.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
19. 19.🧺 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 magnet (d) bright sunlight
20. 20.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
21. 21.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) tiny drops of water (d) only yellow light
22. 22.🌈 In VIBGYOR, what number colour is green?
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.⚖️ 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
27. 27.⚖️ 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 white paper (b) the amount of water (c) the same glass (d) the time of day
28. 28.🧺 Do we need a battery cell 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: brightness of rainbow is what we measure. (a) True (b) False
30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
31. 31.⚖️ 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
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
33. 33.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) yeast (d) a balloon
34. 34.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
35. 35.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ 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 amount of water (d) the same white paper
38. 38.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sunny window
40. 40.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False

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