Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 669 · 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 of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) a magnet (d) a balloon
2. 2.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
3. 3.True or false: a mirror 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 “brightness of rainbow”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) turmeric powder
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
7. 7.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) bright sunlight
10. 10.🛟 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 the Sun moves (d) so it gets hot
11. 11.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a sunny window
13. 13.⚖️ 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
14. 14.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow
15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
16. 16.⚖️ 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 time of day (c) the amount of water (d) the same window
17. 17.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) evaporation (d) magnetism
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) yeast (c) a clear glass of water (d) bright sunlight
19. 19.⚖️ 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
20. 20.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue
21. 21.⚖️ 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 amount of water (b) the same glass (c) the same window (d) the time of day
22. 22.🧺 Do we need bright sunlight 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) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
27. 27.☀️ 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
28. 28.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
29. 29.⚖️ 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 measure it (b) we keep it the same (c) we change it
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 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
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
34. 34.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
35. 35.⚖️ 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
36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a balloon
38. 38.⚖️ 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
39. 39.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
40. 40.True or false: a balloon is needed for the water rainbow. (a) False (b) True

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