Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 772 · 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.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
3. 3.🌈 In VIBGYOR, what number colour is blue?
4. 4.⚖️ 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) brightness of rainbow (d) the amount of water
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ 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
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
9. 9.🌈 In VIBGYOR, what number colour is red?
10. 10.⚖️ 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
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a battery cell
14. 14.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
15. 15.⚖️ 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 change it (c) we measure it
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a mirror
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) in front of you (d) straight above you
19. 19.⚖️ 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
20. 20.⚖️ 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 time of day (b) the amount of water (c) the same glass (d) brightness of rainbow
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
22. 22.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
24. 24.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
25. 25.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
26. 26.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
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 amount of water (b) brightness of rainbow (c) the same glass
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sunny window (c) a mirror (d) a battery cell
32. 32.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) a sunny window (d) bright sunlight
34. 34.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
35. 35.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
37. 37.🌈 In VIBGYOR, what number colour is yellow?
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a sunny window (d) bright sunlight
39. 39.True or false: yeast is not needed for the water rainbow. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False

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