Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 497 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (c) bright sunlight (d) a sunny window
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🌈 In VIBGYOR, what number colour is yellow?
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
5. 5.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
6. 6.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny bits of dust (d) tiny drops of water
7. 7.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a mirror (d) a sunny window
8. 8.🧺 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 battery cell
9. 9.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
10. 10.True or false: a mirror is needed for the water rainbow. (a) False (b) True
11. 11.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
12. 12.⚖️ 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 same glass (b) the amount of water (c) brightness of rainbow
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a magnet (d) a clear glass of water
14. 14.🧺 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) turmeric powder (d) a sunny window
15. 15.True or false: yeast is needed for the water rainbow. (a) False (b) True
16. 16.🌈 In VIBGYOR, what number colour is violet?
17. 17.🛟 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
18. 18.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a magnet (d) a sheet of white paper
20. 20.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) a clear glass of water
23. 23.⚖️ 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 change it (c) we measure it
24. 24.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
25. 25.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
26. 26.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) the water is coloured (d) water splits the light
27. 27.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) bright sunlight (d) a magnet
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a battery cell
29. 29.True or false: a balloon is needed for the water rainbow. (a) True (b) False
30. 30.⚖️ 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) brightness of rainbow (c) the amount of water (d) the time of day
31. 31.🌈 In VIBGYOR, what number colour is green?
32. 32.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a mirror (d) bright sunlight
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 glass (c) the amount of water (d) the same white paper
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 white paper”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
38. 38.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
40. 40.🌈 In VIBGYOR, what number colour is blue?

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