Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 772 · 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.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.True or false: making ice lollies is evaporation. (a) True (b) False
3. 3.⚖️ 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 measure it (c) we change it
4. 4.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
5. 5.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: food colour is not needed for the coloured flower experiment. (a) True (b) False
7. 7.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is what we measure. (a) True (b) False
8. 8.🛟 Who should pour the warm water in the dissolving test? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
9. 9.🔮 Predict: which dissolves faster — a sugar cube or the same amount of powdered sugar? (a) neither of them (b) both the same (c) the sugar cube (d) powdered sugar
10. 10.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🛟 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
12. 12.True or false: food colour does not dissolve in water. (a) True (b) False
13. 13.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the tub of water
15. 15.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
16. 16.🔮 Predict: does stirring make sugar dissolve faster or slower? (a) slower (b) faster (c) the same (d) not at all
17. 17.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.True or false: cling film is needed for the water cycle bowl. (a) True (b) False
20. 20.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the stirring”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) how big we blow it (b) distance it travels (c) the slope of the string (d) the same string
22. 22.🧺 Do we need a long string for the balloon rocket? (a) not needed (b) needed
23. 23.🧺 Do we need a paper clip for the paper helicopter? (a) not needed (b) needed
24. 24.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
25. 25.💧 Which of these does not let water climb? (a) a rubber eraser (b) a cotton thread (c) a strip of cloth (d) a flower stem
26. 26.🎈 What is the job of the straw on the string? (a) it blows air in (b) it guides the balloon (c) it holds water (d) it makes it heavier
27. 27.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a vacuum cleaner
28. 28.True or false: cold water is not needed for the dissolving test. (a) True (b) False
29. 29.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the amount of sugar is the one thing we change. (a) True (b) False
31. 31.💧 Which of these is melting? (a) drops on a cold glass (b) drops under a pot lid (c) snow turning to water (d) wet clothes drying
32. 32.🛟 Does a coin float or sink in water? (a) floats (b) sinks
33. 33.🥄 Which of these does not dissolve in water? (a) food colour (b) chalk powder (c) table salt (d) sugar
34. 34.⚖️ Fair test — do the layers end up in the same order if we pour the liquids in a different order? True or false: the order of pouring is what we measure. (a) False (b) True
35. 35.⚖️ 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) the same glass (c) the order of the layers
36. 36.True or false: a flower stem lets water climb up it. (a) True (b) False
37. 37.True or false: a paper clip is needed for the paper helicopter. (a) False (b) True
38. 38.🔮 Predict: you gently drop a small cork into the tower. Where does it stop? (a) on top of the oil (b) in the honey layer (c) under the honey (d) in the water layer
39. 39.True or false: yeast is needed for the density tower. (a) True (b) False
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same glass

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