Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 980 · 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 sunny window for the water rainbow? (a) needed (b) not needed
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.🧺 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 sheet of white paper (d) bright sunlight
5. 5.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) violet (d) orange
6. 6.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
7. 7.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
8. 8.⚖️ 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) True (b) False
9. 9.🌈 In VIBGYOR, what number colour is green?
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) brightness of rainbow (b) the same white paper (c) the amount of water (d) the same glass
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
12. 12.⚖️ 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
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
15. 15.🧺 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) bright sunlight (d) a magnet
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
17. 17.⚖️ 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 time of day
18. 18.⚖️ 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 glass (b) the time of day (c) the amount of water (d) brightness of rainbow
19. 19.🧺 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) a clear glass of water
20. 20.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
22. 22.🌈 In VIBGYOR, what number colour is blue?
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.⚖️ 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
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) violet (d) red
27. 27.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
28. 28.🌈 In VIBGYOR, what number colour is yellow?
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) bright sunlight (d) a clear glass of water
30. 30.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) tiny bits of dust (d) many colours mixed
31. 31.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a mirror (d) a sunny window
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a mirror
33. 33.🌈 In VIBGYOR, what number colour is orange?
34. 34.⚖️ 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
35. 35.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) yeast (d) turmeric powder
36. 36.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
39. 39.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
40. 40.🌈 In VIBGYOR, what number colour is red?

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