Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 757 · 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) snow falling (c) a shadow of ice (d) a magnet
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) yeast
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
7. 7.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) bright sunlight
10. 10.🧺 Do we need a balloon 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) violet (b) yellow (c) red (d) orange
12. 12.🛟 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
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
15. 15.True or false: yeast is not needed for the water rainbow. (a) True (b) False
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 what we measure. (a) True (b) False
17. 17.⚖️ 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
18. 18.🔮 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
19. 19.True or false: a mirror is needed for the water rainbow. (a) False (b) True
20. 20.🛟 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
21. 21.🧺 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) turmeric powder (d) bright sunlight
22. 22.⚖️ 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 window (c) the same white paper (d) the amount of water
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) the amount of water (b) brightness of rainbow (c) the time of day
24. 24.🌈 In VIBGYOR, what number colour is red?
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a balloon
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.🧺 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
29. 29.True or false: a magnet is needed for the water rainbow. (a) False (b) True
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a sheet of white paper (d) bright sunlight
31. 31.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a clear glass of water (d) turmeric powder
33. 33.☀️ 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
34. 34.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) prisms (d) balloons
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
37. 37.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) bright sunlight
39. 39.⚖️ 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 window
40. 40.True or false: a balloon is not needed for the water rainbow. (a) True (b) False

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