Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 412 · 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.⚖️ 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 keep it the same (b) we measure it (c) we change it
2. 2.True or false: a magnet is needed for the water rainbow. (a) False (b) True
3. 3.⚖️ 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 glass (b) brightness of rainbow (c) the time of day (d) the amount of water
4. 4.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
7. 7.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
8. 8.🧺 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 sunny window (d) turmeric powder
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
10. 10.⚖️ 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 same white paper (c) the same glass (d) the amount of water
11. 11.🌈 In VIBGYOR, what number colour is red?
12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.True or false: a balloon is needed for the water rainbow. (a) True (b) False
15. 15.🌈 In VIBGYOR, what number colour is yellow?
16. 16.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
17. 17.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
18. 18.⚖️ 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
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) yeast (d) a magnet
21. 21.⚖️ 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) True (b) False
22. 22.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
23. 23.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.⚖️ 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 keep it the same (c) we measure it
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) False (b) True
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a magnet
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) yeast
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🧺 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 balloon (d) a clear glass of water
35. 35.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
36. 36.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
37. 37.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) orange (d) red
38. 38.True or false: a battery cell is not needed for the water rainbow. (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 sheet of white paper is needed for the water rainbow. (a) True (b) False

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