Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 940 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
2. 2.True or false: a compass needle works by magnetism. (a) True (b) False
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a battery cell
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.True or false: a fridge magnet works by air pressure. (a) False (b) True
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a balloon (d) a sink or a bucket
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) False (b) True
10. 10.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
12. 12.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: a fridge magnet works by magnetism. (a) True (b) False
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) a magnet
15. 15.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
16. 16.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic pin holder
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) whether the card stays (b) how full the glass is (c) the same card
21. 21.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
22. 22.⚖️ 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) the same glass (b) the same card (c) whether the card stays (d) the way we turn it
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a drinking straw (d) a bicycle pump
25. 25.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
26. 26.True or false: a drinking straw works by air pressure. (a) False (b) True
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
29. 29.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a magnetic pin holder
30. 30.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a bicycle pump works by magnetism. (a) False (b) True
32. 32.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.⚖️ 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 the one thing we change. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a compass needle (d) a magnetic chess set
35. 35.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same glass (b) how full the glass is (c) whether the card stays
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a balloon (d) a sink or a bucket
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a glass of water

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