Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 951 · 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) a sheet of white paper (b) bright sunlight (c) yeast (d) a sunny window
2. 2.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
5. 5.True or false: a mirror is needed for the water rainbow. (a) True (b) False
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
8. 8.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) tiny drops of water (d) only yellow light
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
10. 10.⚖️ 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
11. 11.🧺 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 sunny window (d) a sheet of white paper
12. 12.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) turmeric powder
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sheet of white paper (d) bright sunlight
17. 17.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
18. 18.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it gets hot (d) so it turns blue
19. 19.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
20. 20.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) evaporation (d) reflection
21. 21.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
22. 22.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a sunny window (d) a mirror
25. 25.🛟 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
26. 26.🌈 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
27. 27.⚖️ 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
28. 28.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
29. 29.🔮 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
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a mirror (d) bright sunlight
31. 31.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
32. 32.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
33. 33.🧺 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) bright sunlight (d) a mirror
34. 34.⚖️ 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 time of day (c) brightness of rainbow (d) the same window
35. 35.⚖️ 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) the same glass (c) brightness of rainbow (d) the amount of water
36. 36.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a magnet (d) a sheet of white paper
37. 37.🧺 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) a battery cell (d) bright sunlight
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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