Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 793 · 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? What do we do with “the time of day”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🌈 In VIBGYOR, what number colour is green?
3. 3.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
6. 6.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) turmeric powder (d) bright sunlight
7. 7.⚖️ 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
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sunny window
9. 9.True or false: yeast is needed for the water rainbow. (a) True (b) False
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
12. 12.🛟 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
13. 13.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) a mirror (d) yeast
14. 14.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) violet (d) green
15. 15.🌈 In VIBGYOR, what number colour is yellow?
16. 16.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
17. 17.🌈 In VIBGYOR, what number colour is indigo?
18. 18.⚖️ 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
19. 19.True or false: a mirror is needed for the water rainbow. (a) False (b) True
20. 20.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a magnet (d) a sheet of white paper
22. 22.🌈 In VIBGYOR, what number colour is blue?
23. 23.🌈 How many colours do we name in a rainbow (VIBGYOR)?
24. 24.⚖️ 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
25. 25.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a clear glass of water
27. 27.⚖️ 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) the time of day (c) the same window (d) brightness of rainbow
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 window”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🧺 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 sunny window (d) turmeric powder
32. 32.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
33. 33.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a battery cell (d) turmeric powder
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
35. 35.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
36. 36.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
40. 40.True or false: a battery cell is needed for the water rainbow. (a) False (b) True

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