Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 969 · 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.True or false: a puddle drying up is condensation. (a) True (b) False
2. 2.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
3. 3.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “how many drops form”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? Which of these is kept the same? (a) the order of pouring (b) how much of each liquid (c) the order of the layers
5. 5.True or false: cling film is not needed for the water cycle bowl. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
7. 7.🧺 Do we need yeast for the density tower? (a) not needed (b) needed
8. 8.True or false: a balloon is needed for the balloon rocket. (a) False (b) True
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a stiff postcard (d) a glass of water
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) sawdust (d) food colour
13. 13.True or false: a drinking straw works by magnetism. (a) False (b) True
14. 14.📘 What is water vapour? (a) salty water (b) a kind of smoke (c) water as a gas (d) tiny ice cubes
15. 15.🫗 Why does cooking oil float on top of water? (a) oil is hot (b) oil is less dense (c) oil is sticky (d) oil is heavier
16. 16.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
18. 18.True or false: sugar does not dissolve in water. (a) False (b) True
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) small test objects (d) a magnet
20. 20.True or false: a battery cell is needed for the paper helicopter. (a) False (b) True
21. 21.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
22. 22.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: how much of each liquid is the one thing we change. (a) False (b) True
23. 23.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) both the same (b) the sugar cube (c) powdered sugar (d) neither of them
24. 24.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil turns into honey (c) oil attracts magnets (d) oil makes it rain
25. 25.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it changes colour (c) it turns into a kite (d) it can pop loudly
26. 26.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a magnet (b) a clock or timer (c) a teaspoon (d) warm water
27. 27.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
28. 28.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🍯 Is an ice cube denser or less dense than water? (a) less dense than water (b) denser than water
30. 30.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) a mirror (b) two clear glasses (c) sugar (d) a teaspoon
31. 31.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
32. 32.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
33. 33.🧺 Which of these is not needed for the water cycle bowl? (a) a mirror (b) a small cup (c) cling film (d) sunlight
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
37. 37.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) escaping air pushes it (c) a magnet pulls it (d) the straw is heavy
38. 38.True or false: table salt does not dissolve in water. (a) True (b) False
39. 39.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the length of the blades”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the person dropping”? (a) we change it (b) we keep it the same (c) we measure it

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