Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 316 · 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.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
2. 2.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) in front of you (d) straight above you
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🔮 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 small rainbow (d) a magnet
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
6. 6.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
7. 7.⚖️ 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 white paper (b) the same window (c) brightness of rainbow (d) the amount of water
8. 8.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
10. 10.🧺 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) yeast
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a balloon
12. 12.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) a battery cell (d) a clear glass of water
13. 13.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
14. 14.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a battery cell (d) a sunny window
15. 15.🧺 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 sunny window (d) turmeric powder
16. 16.🌈 In VIBGYOR, what number colour is violet?
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) water splits the light (c) the paper makes colours (d) the glass is painted
20. 20.🧺 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 sunny window (d) bright sunlight
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) clouds (d) balloons
22. 22.🌈 In VIBGYOR, what number colour is orange?
23. 23.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
24. 24.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
27. 27.⚖️ 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 same white paper (b) the same window (c) brightness of rainbow (d) the amount of water
28. 28.⚖️ 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) False (b) True
29. 29.🌈 In VIBGYOR, what number colour is green?
30. 30.🌈 In VIBGYOR, what number colour is yellow?
31. 31.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
33. 33.🌈 In VIBGYOR, what number colour is blue?
34. 34.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sheet of white paper (c) a mirror (d) a magnet
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a sunny window (d) bright sunlight
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a battery cell (d) a clear glass of water
38. 38.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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