Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 439 · 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.🧺 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 clear glass of water
2. 2.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
3. 3.⚖️ 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 keep it the same (c) we measure it
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a balloon
5. 5.True or false: a magnet is needed for the water rainbow. (a) False (b) True
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) yeast (d) a sunny window
7. 7.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
12. 12.⚖️ 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
13. 13.⚖️ 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 time of day (c) brightness of rainbow (d) the amount of water
14. 14.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
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 glass”? (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.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
18. 18.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
20. 20.True or false: bright sunlight 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? Which of these is kept the same? (a) brightness of rainbow (b) the same window (c) the amount of water
22. 22.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
23. 23.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
24. 24.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
28. 28.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
29. 29.True or false: a balloon is needed for the water rainbow. (a) True (b) False
30. 30.⚖️ 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 change it (c) we keep it the same
31. 31.🌈 In VIBGYOR, what number colour is violet?
32. 32.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) bright sunlight (d) a battery cell
33. 33.⚖️ 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
34. 34.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
36. 36.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a balloon (d) a magnet
37. 37.True or false: a sunny window is not 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) a sunny window (b) a sheet of white paper (c) yeast (d) a clear glass of water
39. 39.🌈 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
40. 40.🧺 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) a magnet

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