Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 550 · 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.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a sunny window (d) bright sunlight
2. 2.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same glass
3. 3.⚖️ 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
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.⚖️ 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
6. 6.🌈 In VIBGYOR, what number colour is violet?
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) brightness of rainbow (b) the amount of water (c) the same window
8. 8.🌈 In VIBGYOR, what number colour is yellow?
9. 9.🌈 In VIBGYOR, what number colour is indigo?
10. 10.⚖️ 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
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the time of day (b) the amount of water (c) brightness of rainbow (d) the same glass
12. 12.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a clear glass of water (d) a sunny window
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
16. 16.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) a magnet (d) turmeric powder
17. 17.🌈 In VIBGYOR, what number colour is blue?
18. 18.🔮 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
19. 19.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a battery cell (d) a clear glass of water
20. 20.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
22. 22.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
23. 23.🧺 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
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) yeast (c) a clear glass of water (d) a sunny window
25. 25.🌈 In VIBGYOR, what number colour is red?
26. 26.⚖️ 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) False (b) True
27. 27.⚖️ 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
28. 28.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
31. 31.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
32. 32.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the paper makes colours (d) the water is coloured
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a mirror (d) a clear glass of water
35. 35.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a clear glass of water
37. 37.True or false: a magnet is needed for the water rainbow. (a) False (b) True
38. 38.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) behind you (d) under the ground
39. 39.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) bright sunlight

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