Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 175 · 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.🌈 In VIBGYOR, what number colour is orange?
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
3. 3.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a sunny window (d) a mirror
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sunny window
5. 5.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
6. 6.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
7. 7.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
9. 9.⚖️ 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
10. 10.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.True or false: a mirror is needed for the water rainbow. (a) True (b) False
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
14. 14.🔮 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
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) yeast
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
18. 18.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
19. 19.🌈 How many colours do we name in a rainbow (VIBGYOR)?
20. 20.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
21. 21.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
22. 22.⚖️ 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) the same white paper (c) the same glass (d) the amount 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 “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.⚖️ 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 window (b) the amount of water (c) the same white paper (d) brightness of rainbow
25. 25.⚖️ 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
26. 26.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
27. 27.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) turmeric powder (d) a clear glass of water
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) brightness of rainbow (b) the amount of water (c) the same glass
29. 29.⚖️ 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 white paper (b) brightness of rainbow (c) the amount of water
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
32. 32.True or false: a magnet is needed for the water rainbow. (a) False (b) True
33. 33.🌈 In VIBGYOR, what number colour is blue?
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) bright sunlight
35. 35.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) a sheet of white paper
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sunny window (d) a sheet of white paper
40. 40.⚖️ 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) True (b) False

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