Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 303 · 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.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a battery cell (d) a sheet of white paper
4. 4.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
5. 5.⚖️ 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 window (b) the amount of water (c) the time of day (d) brightness of rainbow
6. 6.🌈 In VIBGYOR, what number colour is violet?
7. 7.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
10. 10.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
12. 12.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
13. 13.🌈 In VIBGYOR, what number colour is blue?
14. 14.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
15. 15.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
16. 16.⚖️ 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) False (b) True
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
20. 20.⚖️ 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) False (b) True
21. 21.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the glass is painted (d) the paper makes colours
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) yeast (d) a sheet of white paper
23. 23.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
24. 24.🧺 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 magnet (d) a clear glass of water
25. 25.⚖️ 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
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it floats away (d) it turns brighter
27. 27.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
28. 28.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
29. 29.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
30. 30.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.⚖️ 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 amount of water (c) the same glass
33. 33.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a sunny window (d) a magnet
38. 38.⚖️ 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 measure it (c) we keep it the same
39. 39.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a battery cell (d) a magnet
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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