Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 899 · 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.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
2. 2.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
4. 4.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a mirror (d) a magnet
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a sunny window
7. 7.True or false: a mirror is needed for the water rainbow. (a) False (b) True
8. 8.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) yeast (d) turmeric powder
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
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 amount of water (d) brightness of rainbow
11. 11.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) turmeric powder
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
15. 15.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) yeast (d) a sunny window
16. 16.⚖️ 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
17. 17.🌈 In VIBGYOR, what number colour is blue?
18. 18.🌈 In VIBGYOR, what number colour is indigo?
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
22. 22.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
24. 24.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) water splits the light (d) the water is coloured
25. 25.🌈 In VIBGYOR, what number colour is orange?
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
28. 28.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ 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
31. 31.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it does not fall (d) so it turns blue
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
33. 33.True or false: yeast is needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) bright sunlight (d) a clear glass of water
35. 35.⚖️ 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 same window (c) the time of day (d) the same white paper
36. 36.⚖️ 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 time of day (c) brightness of rainbow
37. 37.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a mirror (d) a clear glass of water
39. 39.⚖️ 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 measure it (b) we keep it the same (c) we change it
40. 40.🌈 In VIBGYOR, what number colour is violet?

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