Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 335 · 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.⚖️ 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
2. 2.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: the drop height is what we measure. (a) False (b) True
3. 3.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is less dense (d) ice is very cold
4. 4.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
5. 5.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes backward (b) goes forward
6. 6.⚖️ 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) how much of each liquid (b) the order of pouring (c) the order of the layers
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
8. 8.True or false: a comb is not needed for the dissolving test. (a) True (b) False
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is what we measure. (a) True (b) False
10. 10.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the water temperature”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🥄 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sand (d) glucose powder
12. 12.⚖️ 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
13. 13.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? True or false: the cling film cover is kept the same. (a) True (b) False
14. 14.🛟 Which rule keeps the density tower experiment safe? (a) do not lick the spoon (b) taste each layer (c) throw the glass (d) pour it on the floor
15. 15.⚖️ 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 kept the same. (a) True (b) False
16. 16.⚖️ 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 the layers”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) whether the card stays (b) how full the glass is (c) the same glass (d) the same card
18. 18.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
19. 19.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
20. 20.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) small test objects (c) a tub of water (d) a results table
22. 22.🛟 Why should we wipe up spilled oil at once? (a) oil attracts magnets (b) oil makes it rain (c) oil turns into honey (d) spilled oil is slippery
23. 23.🚀 Which of these goes forward? (a) the rowing boat (b) air from the balloon (c) water from the oars (d) water a swimmer pushes
24. 24.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) food colour (c) a white flower (d) a few hours of waiting
25. 25.🔍 Which is the odd one out? (a) sugar (b) sand (c) table salt (d) glucose powder
26. 26.🧺 Which of these is needed for the density tower? (a) a spoon (b) a mirror (c) turmeric powder (d) a battery cell
27. 27.🎈 When does the balloon rocket stop? (a) when the air runs out (b) when it turns blue (c) when it gets cold (d) it never stops
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) a balloon (d) a results table
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) turmeric powder (c) a balloon (d) a magnet
31. 31.🔮 A flat sheet and a crumpled ball of the same paper drop together. Which lands first? (a) neither of them (b) the crumpled ball (c) the flat sheet (d) a sheet of glass
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a tub of water
33. 33.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
35. 35.⚖️ 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) brightness of rainbow (c) the time of day (d) the same white paper
36. 36.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is kept the same? (a) the water temperature (b) time to dissolve (c) the amount of water
37. 37.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
38. 38.🧺 Which of these is needed for the dissolving test? (a) honey (b) cotton wool (c) a balloon (d) two clear glasses
39. 39.💧 Which of these is condensation? (a) ice becoming water (b) a misty bathroom mirror (c) making ice lollies (d) a pond icing over
40. 40.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a strip of paper (b) safety scissors (c) a pencil (d) a battery cell

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