Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 1 · 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.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
2. 2.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
6. 6.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.True or false: a bicycle pump works by magnetism. (a) False (b) True
8. 8.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
10. 10.True or false: a medicine dropper works by magnetism. (a) False (b) True
11. 11.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a drinking straw
12. 12.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
16. 16.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
17. 17.True or false: a magnetic chess set works by air pressure. (a) False (b) True
18. 18.⚖️ 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) True (b) False
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it 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? Which of these is kept the same? (a) the same glass (b) how full the glass is (c) whether the card stays
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a suction hook
27. 27.⚖️ 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 kept the same. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
29. 29.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a balloon (d) a towel
32. 32.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ 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
35. 35.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.⚖️ 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 card (b) how full the glass is (c) whether the card stays
37. 37.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a medicine dropper (d) a compass needle
39. 39.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
40. 40.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure

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