Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 472 · 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.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
2. 2.True or false: a mirror is needed for the water rainbow. (a) False (b) True
3. 3.🌈 In VIBGYOR, what number colour is green?
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🌈 In VIBGYOR, what number colour is blue?
6. 6.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
7. 7.🌈 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
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
12. 12.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
14. 14.True or false: yeast is not needed for the water rainbow. (a) True (b) False
15. 15.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a magnet (d) a clear glass of water
16. 16.🛟 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
17. 17.🌈 In VIBGYOR, what number colour is yellow?
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 same glass (b) the time of day (c) the amount of water (d) the same white paper
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a mirror
24. 24.⚖️ 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
25. 25.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a sunny window (d) bright sunlight
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) bright sunlight (d) a clear glass of water
28. 28.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
29. 29.🌈 In VIBGYOR, what number colour is violet?
30. 30.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
31. 31.⚖️ 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 change it (b) we measure it (c) we keep it the same
32. 32.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) only yellow light (d) tiny bits of dust
33. 33.True or false: a battery cell 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? True or false: the same white paper is the one thing we change. (a) True (b) False
35. 35.⚖️ 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
36. 36.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
37. 37.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a magnet

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