Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 54 · 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 “brightness of rainbow”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
3. 3.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a mirror (d) a clear glass of water
6. 6.🌈 In VIBGYOR, what number colour is yellow?
7. 7.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
8. 8.⚖️ 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
9. 9.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
10. 10.🌈 In VIBGYOR, what number colour is red?
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a clear glass of water (d) a sunny window
13. 13.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
14. 14.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
15. 15.⚖️ 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) brightness of rainbow (b) the same white paper (c) the amount of water (d) the same window
16. 16.True or false: a balloon is needed for the water rainbow. (a) True (b) False
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
18. 18.⚖️ 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 white paper (d) the same glass
19. 19.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a magnet (d) a balloon
20. 20.⚖️ 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
21. 21.⚖️ 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 same glass (c) the amount of water
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a battery cell (c) bright sunlight (d) a sheet of white paper
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.☀️ 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
29. 29.🧺 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 sheet of white paper (d) turmeric powder
30. 30.🔮 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
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sunny window (d) a sheet of white paper
32. 32.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
33. 33.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
34. 34.🌈 In VIBGYOR, what number colour is indigo?
35. 35.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
36. 36.🌈 In VIBGYOR, what number colour is blue?
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) turmeric powder (d) a clear glass of water
38. 38.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) a sunny window
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True

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