Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 747 · 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.⚖️ 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
2. 2.🌈 In VIBGYOR, what number colour is yellow?
3. 3.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) turmeric powder (d) a balloon
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) yeast
5. 5.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a magnet (c) yeast (d) a mirror
6. 6.⚖️ 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 amount of water (b) brightness of rainbow (c) the same white paper (d) the time of day
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sunny window
9. 9.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
10. 10.🌈 In VIBGYOR, what number colour is violet?
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
12. 12.⚖️ 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) False (b) True
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
14. 14.⚖️ 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) brightness of rainbow (d) the same white paper
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sunny window (d) a clear glass of water
17. 17.⚖️ 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
18. 18.🌈 How many colours do we name in a rainbow (VIBGYOR)?
19. 19.🛟 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
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.⚖️ 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
23. 23.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a balloon (d) a mirror
24. 24.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) orange (c) red (d) yellow
25. 25.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
26. 26.🌈 In VIBGYOR, what number colour is indigo?
27. 27.⚖️ 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) False (b) True
28. 28.⚖️ 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 keep it the same (b) we change it (c) we measure it
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) turmeric powder
30. 30.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
31. 31.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
33. 33.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) tiny bits of dust (d) only yellow light
34. 34.True or false: a balloon is needed for the water rainbow. (a) True (b) False
35. 35.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) bright sunlight (d) a sheet of white paper
37. 37.🌈 In VIBGYOR, what number colour is red?
38. 38.⚖️ 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 amount of water (b) brightness of rainbow (c) the same white paper
39. 39.🌈 In VIBGYOR, what number colour is blue?
40. 40.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True

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