Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 628 · 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 kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🛟 Which rule keeps the density tower experiment safe? (a) pour it on the floor (b) throw the glass (c) taste each layer (d) do not lick the spoon
3. 3.🧺 Which of these is not needed for the balloon rocket? (a) a drinking straw (b) turmeric powder (c) a long string (d) two chairs
4. 4.True or false: cooking oil is not needed for the density tower. (a) False (b) True
5. 5.🛟 Does a cork float or sink in water? (a) sinks (b) floats
6. 6.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? Which of these is what we measure? (a) time to dissolve (b) the amount of sugar (c) the kind of sugar (d) the water temperature
7. 7.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the time we wait”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.⚖️ 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 same three liquids”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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) the same tape (c) distance it travels
10. 10.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) powdered sugar (b) the sugar cube (c) neither of them (d) both the same
11. 11.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic pin holder
12. 12.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a mirror (d) a balloon
13. 13.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) sugar (d) sand
14. 14.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the tub of water (c) the shape of the clay
16. 16.🔍 How can you get the salt back from salty water? (a) add more water (b) keep it in a fridge (c) stir it more (d) let the water evaporate
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
18. 18.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ 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 measure it (c) we change it
22. 22.💧 Which change is this: water becoming ice? (a) condensation (b) melting (c) evaporation (d) freezing
23. 23.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) lots of salt stirred in (d) a little shaking
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the kind of clay (d) the tub of water
26. 26.🔍 Which is the odd one out? (a) honey (b) a ping-pong ball (c) very salty water (d) a glass marble
27. 27.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? True or false: time to reach the floor is the one thing we change. (a) False (b) True
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a magnet (d) a few hours of waiting
29. 29.🧺 Do we need sunlight for the water cycle bowl? (a) needed (b) not needed
30. 30.True or false: a magnet is needed for the water rainbow. (a) False (b) True
31. 31.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the density tower? (a) a tall clear glass (b) honey (c) cooking oil (d) a mirror
33. 33.🛟 Which scissors should children use to cut the paper? (a) gardening shears (b) sharp kitchen shears (c) a paper cutter (d) safety scissors
34. 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) False (b) True
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) a magnet (d) turmeric powder
36. 36.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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 change it (c) we keep it the same
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) the amount of clay (b) the kind of clay (c) the shape of the clay (d) whether it floats
39. 39.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a medicine dropper
40. 40.🥄 Which of these dissolves faster? (a) sugar in icy water (b) sugar left unstirred (c) a big sugar cube (d) sugar stirred well

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