Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 792 · 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.🍯 Which of these is less dense than water? (a) cooking oil (b) very salty water (c) a pebble (d) a coin
2. 2.True or false: a balloon is not needed for the paper helicopter. (a) False (b) True
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a balloon (c) a battery cell (d) a towel for spills
4. 4.🚀 Which of these goes forward? (a) water a swimmer pushes (b) the swimmer (c) air from the balloon (d) water from the oars
5. 5.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) water (b) cling film (c) a big bowl (d) turmeric powder
6. 6.🧺 Do we need yeast for the paper helicopter? (a) needed (b) not needed
7. 7.🧺 Do we need water for the water cycle bowl? (a) not needed (b) needed
8. 8.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
9. 9.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
10. 10.⚖️ 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) how many drops form (c) the time we wait (d) the amount of water
11. 11.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? What do we do with “the kind of paper”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it dissolves (d) it sinks faster
13. 13.🧺 Which of these is needed for the water cycle bowl? (a) a magnet (b) a balloon (c) yeast (d) water
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the amount of clay”? (a) we measure it (b) we keep it the same (c) we change it
15. 15.🧺 Do we need a small cup for the water cycle bowl? (a) not needed (b) needed
16. 16.True or false: powdered sugar dissolves slower. (a) True (b) False
17. 17.🧺 Which of these is not needed for the balloon rocket? (a) a balloon (b) a drinking straw (c) sticky tape (d) a magnet
18. 18.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.True or false: a glass marble falls slowly through the air. (a) False (b) True
21. 21.🛟 Which of these floats on water? (a) a steel spoon (b) a ball of clay (c) a pebble (d) an ice-cream stick
22. 22.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls fast (b) falls slowly
25. 25.🧺 Do we need sunlight for the water cycle bowl? (a) not needed (b) needed
26. 26.🔍 Which is the odd one out? (a) a paper helicopter (b) an open sheet of paper (c) a feather (d) a crumpled paper ball
27. 27.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) the sugar cube (c) both the same (d) neither of them
28. 28.🛟 Why should we wipe up spilled oil at once? (a) oil turns into honey (b) oil attracts magnets (c) oil makes it rain (d) spilled oil is slippery
29. 29.🥄 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.🧺 Which of these is needed for the paper helicopter? (a) a balloon (b) a mirror (c) a strip of paper (d) turmeric powder
31. 31.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a plastic ruler (d) a rubber eraser
32. 32.True or false: a battery cell is not needed for the density tower. (a) True (b) False
33. 33.🥄 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a tall clear glass (b) cooking oil (c) yeast (d) honey
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
36. 36.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
37. 37.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.True or false: honey is not needed for the density tower. (a) True (b) False
39. 39.💧 Which of these is melting? (a) sweat drying on skin (b) snow turning to water (c) a pond icing over (d) wet clothes drying
40. 40.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we keep it the same (b) we measure it (c) we change it

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