Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 296 · 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? Which of these is the one thing we change? (a) the same window (b) the amount of water (c) the same glass (d) the time of day
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
3. 3.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) yeast (d) a magnet
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
7. 7.⚖️ 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) the same glass (c) brightness of rainbow
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
10. 10.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
11. 11.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
12. 12.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
14. 14.⚖️ 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
15. 15.🌈 In VIBGYOR, what number colour is orange?
16. 16.True or false: a magnet is needed for the water rainbow. (a) True (b) False
17. 17.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a battery cell (d) bright sunlight
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 the one thing we change. (a) False (b) True
19. 19.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
20. 20.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
21. 21.🌈 In VIBGYOR, what number colour is red?
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a balloon (d) a battery cell
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
26. 26.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) tiny drops of water (d) only yellow light
27. 27.🛟 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
28. 28.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
29. 29.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
31. 31.⚖️ 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
32. 32.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
33. 33.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
34. 34.🌈 In VIBGYOR, what number colour is green?
35. 35.True or false: a battery cell is 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 “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) turmeric powder

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