Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 955 · 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.🧺 Do we need cold water for the dissolving test? (a) not needed (b) needed
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a balloon (d) a magnet
4. 4.⚖️ 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 glass”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔍 Sand is stirred into water. What do you see after a while? (a) it dissolves (b) it floats up (c) it turns blue (d) it settles at the bottom
6. 6.🧺 Do we need a battery cell for the density tower? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) water with food colour (b) a balloon (c) honey (d) a spoon
8. 8.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it holds water (c) it guides the balloon (d) it blows air in
9. 9.True or false: table salt dissolves in water. (a) False (b) True
10. 10.🚁 Dropped from a raised hand, does a toy parachute fall slowly or fast? (a) falls slowly (b) falls fast
11. 11.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
12. 12.🧺 Do we need a magnet for the balloon rocket? (a) needed (b) not needed
13. 13.⚖️ 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 keep it the same (b) we change it (c) we measure it
14. 14.🧺 Which of these is needed for the density tower? (a) a battery cell (b) yeast (c) a balloon (d) honey
15. 15.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: the kind of sugar is kept the same. (a) True (b) False
16. 16.🔮 Predict: you shake oil and water hard in a closed bottle and wait. What happens? (a) they separate again (b) they turn to honey (c) they become solid (d) they mix for ever
17. 17.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
18. 18.💧 Which of these is freezing? (a) wet hair drying (b) wet clothes drying (c) butter going runny (d) water becoming ice
19. 19.🍯 Why does honey sink to the bottom of the glass? (a) it is the coldest (b) it is the stickiest (c) it is the densest (d) it is yellow
20. 20.🛟 What should you do with wet floors after the experiment? (a) slide on them (b) pour more water (c) wipe them dry (d) leave them wet
21. 21.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
22. 22.🔍 Which is the odd one out? (a) a cotton thread (b) a flower stem (c) a plastic ruler (d) a sugar cube
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🛟 Which scissors should children use to cut the paper? (a) sharp kitchen shears (b) a paper cutter (c) safety scissors (d) gardening shears
26. 26.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
28. 28.⚖️ Fair test — do longer blades make the paper helicopter fall more slowly? Which of these is kept the same? (a) the length of the blades (b) the drop height (c) time to reach the floor
29. 29.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: a magnet is not needed for the paper helicopter. (a) False (b) True
31. 31.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🛟 Where is a safe place to drop the helicopter from? (a) a high window ledge (b) a wobbly chair (c) a roof edge (d) from your raised hand
33. 33.True or false: a glass marble does not let water climb. (a) False (b) True
34. 34.🧺 Three of these are needed for the density tower. Which one is NOT needed? (a) a magnet (b) cooking oil (c) honey (d) water with food colour
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the kind of clay
36. 36.🧺 Which of these is needed for the paper helicopter? (a) a mirror (b) turmeric powder (c) a balloon (d) a ruler
37. 37.🛟 Why should we wipe up spilled oil at once? (a) spilled oil is slippery (b) oil makes it rain (c) oil attracts magnets (d) oil turns into honey
38. 38.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) a mirror (b) a ruler (c) a strip of paper (d) safety scissors
39. 39.⚖️ 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) the time of day (c) brightness of rainbow
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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