Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 244 · 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? Which of these is the one thing we change? (a) the same glass (b) brightness of rainbow (c) the same window (d) the amount of water
2. 2.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a battery cell
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.True or false: a magnet is needed for the water rainbow. (a) False (b) True
6. 6.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
7. 7.🛟 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
8. 8.🌈 In VIBGYOR, what number colour is blue?
9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
11. 11.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
13. 13.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
14. 14.⚖️ 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
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.🧺 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) a mirror
19. 19.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) bright sunlight (d) a sheet of white paper
21. 21.⚖️ 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 measure it (c) we change it
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
24. 24.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
25. 25.⚖️ 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 window (c) the amount of water (d) the same white paper
26. 26.🌈 In VIBGYOR, what number colour is indigo?
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) a magnet
28. 28.⚖️ 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
29. 29.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
30. 30.🌈 In VIBGYOR, what number colour is red?
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) turmeric powder (d) a sheet of white paper
32. 32.🌈 In VIBGYOR, what number colour is orange?
33. 33.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
34. 34.🔮 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
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) in front of you (d) under the ground
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 glass”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
38. 38.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet

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