Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 577 · 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? True or false: the time of day is kept the same. (a) False (b) True
2. 2.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
3. 3.🧺 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 clear glass of water (d) a balloon
4. 4.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) yeast (d) a sunny window
5. 5.🧺 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) a battery cell (d) a sheet of white paper
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a mirror
7. 7.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a magnet (d) a balloon
11. 11.⚖️ 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 time of day (b) the same glass (c) the same window (d) the amount of water
12. 12.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
13. 13.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
14. 14.⚖️ 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
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a sunny window (d) bright sunlight
17. 17.⚖️ 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
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
20. 20.🛟 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 it gets hot (d) so the Sun moves
21. 21.☀️ 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
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
23. 23.⚖️ 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 time of day (c) the amount of water
24. 24.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a mirror (d) yeast
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.⚖️ 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 same window (d) the same white paper
28. 28.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
29. 29.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
30. 30.🌈 In VIBGYOR, what number colour is green?
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
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) the amount of water (b) brightness of rainbow (c) the same window
33. 33.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not 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) True (b) False
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) orange (d) red
36. 36.⚖️ 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
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
38. 38.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
39. 39.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
40. 40.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed

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