Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 520 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
2. 2.⚖️ 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
3. 3.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
6. 6.True or false: a magnet is needed for the water rainbow. (a) True (b) False
7. 7.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) yeast
9. 9.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
10. 10.⚖️ 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) False (b) True
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) prisms (d) clouds
12. 12.🌈 In VIBGYOR, what number colour is red?
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
14. 14.🌈 In VIBGYOR, what number colour is indigo?
15. 15.🛟 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
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 small rainbow (d) a shadow of ice
17. 17.⚖️ 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) brightness of rainbow (b) the same white paper (c) the amount of water (d) the same glass
18. 18.🧺 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
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) yeast (d) a battery cell
22. 22.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
23. 23.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
24. 24.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
25. 25.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a balloon (d) yeast
26. 26.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
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) brightness of rainbow (b) the same white paper (c) the same glass (d) the amount of water
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a mirror
31. 31.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
32. 32.⚖️ 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) False (b) True
33. 33.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a sheet of white paper (d) a battery cell
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) a sunny window (d) bright sunlight
38. 38.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
39. 39.⚖️ 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) brightness of rainbow (c) the same glass
40. 40.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed

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