Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 196 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
2. 2.🍯 Is cooking oil denser or less dense than water? (a) less dense than water (b) denser than water
3. 3.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) turmeric powder (b) a spoon (c) water with food colour (d) a tall clear glass
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.🛟 Why should you not over-blow the balloon? (a) it changes colour (b) it can pop loudly (c) it gets too heavy (d) it turns into a kite
6. 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) distance it travels (b) the same tape (c) the slope of the string (d) the same straw
7. 7.🥄 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the paper clip”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.True or false: a metal key floats on water. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) a dry leaf (b) a cork (c) a steel spoon (d) a ping-pong ball
11. 11.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
12. 12.True or false: an iron nail floats on water. (a) True (b) False
13. 13.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is the one thing we change? (a) the paper clip (b) the kind of paper (c) the length of the blades (d) the drop height
14. 14.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? Which of these is the one thing we change? (a) sun or shade (b) the cling film cover (c) how many drops form (d) the size of the bowl
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) food colour (c) a few hours of waiting (d) a balloon
16. 16.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
18. 18.🥄 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) water with food colour (c) a battery cell (d) cooking oil
20. 20.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the water layer (c) at the very bottom (d) in the oil layer
21. 21.🍯 Is a cork denser or less dense than water? (a) denser than water (b) less dense than water
22. 22.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) aim it at your friend (c) blow it till it bursts (d) put string round a neck
23. 23.🥄 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🚁 Dropped from a raised hand, does a crumpled paper ball fall slowly or fast? (a) falls fast (b) falls slowly
25. 25.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a spoon (b) cooking oil (c) honey (d) a magnet
26. 26.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) in the honey layer (b) on top of the oil (c) in the water layer (d) under the honey
27. 27.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? What do we do with “the order of pouring”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
29. 29.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a balloon (b) a strip of paper (c) safety scissors (d) a pencil
30. 30.⚖️ 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
31. 31.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil makes it rain (c) oil attracts magnets (d) spilled oil is slippery
32. 32.⚖️ 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 change it (b) we measure it (c) we keep it the same
33. 33.🧺 Do we need vinegar for the balloon rocket? (a) needed (b) not needed
34. 34.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
35. 35.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) safety scissors (c) a paper cutter (d) gardening shears
36. 36.🚀 Which of these goes backward? (a) the balloon (b) water a swimmer pushes (c) the rocket (d) the rowing boat
37. 37.🧺 Which of these is not needed for the water cycle bowl? (a) sunlight (b) cling film (c) water (d) a battery cell
38. 38.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
39. 39.🔮 Predict: you add two more paper clips. How does it fall? (a) slower (b) it stops in the air (c) faster (d) it floats up
40. 40.🧺 Do we need a balloon for the water cycle bowl? (a) needed (b) not needed

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