Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 655 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves
2. 2.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.⚖️ 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
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
7. 7.⚖️ 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
8. 8.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
9. 9.⚖️ 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) True (b) False
10. 10.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
11. 11.⚖️ 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 change it (b) we keep it the same (c) we measure it
12. 12.⚖️ 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
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
15. 15.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) bright sunlight (d) a clear glass of water
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a battery cell (d) a clear glass of water
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
22. 22.⚖️ 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 glass (d) brightness of rainbow
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 measure it (b) we keep it the same (c) we change it
24. 24.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
25. 25.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) 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? Which of these is kept the same? (a) the amount of water (b) the same white paper (c) brightness of rainbow
28. 28.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) yeast
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
31. 31.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
32. 32.⚖️ 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) True (b) False
33. 33.⚖️ 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 change it (c) we measure it
34. 34.⚖️ 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) True (b) False
35. 35.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
36. 36.🌈 How many colours do we name in a rainbow (VIBGYOR)?
37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
38. 38.🌈 In VIBGYOR, what number colour is green?
39. 39.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) a sheet of white paper

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids