Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 232 · 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.🌈 In VIBGYOR, what number colour is violet?
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
6. 6.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
7. 7.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
9. 9.🧺 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) bright sunlight (d) turmeric powder
10. 10.⚖️ 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 window (b) brightness of rainbow (c) the amount of water (d) the same glass
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
12. 12.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
13. 13.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) yeast
14. 14.⚖️ 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) brightness of rainbow (d) the same glass
15. 15.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
18. 18.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
21. 21.🛟 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 does not fall (d) so it turns blue
22. 22.⚖️ 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 change it (c) we measure it
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
24. 24.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
26. 26.🌈 In VIBGYOR, what number colour is green?
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a battery cell (d) a sheet of white paper
28. 28.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
29. 29.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) yeast (d) a clear glass of water
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a battery cell (d) a balloon
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
33. 33.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
34. 34.🧺 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) a mirror (d) a sunny window
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a balloon
39. 39.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a balloon (d) a magnet
40. 40.⚖️ 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) the same glass (c) brightness of rainbow

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