Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 290 · 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.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
3. 3.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic pin holder
4. 4.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a balloon (d) a towel
6. 6.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
7. 7.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a sink or a bucket (d) a stiff postcard
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
12. 12.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
13. 13.⚖️ 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) the same glass (b) the way we turn it (c) how full the glass is (d) the same card
14. 14.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
18. 18.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
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) how full the glass is (b) whether the card stays (c) the way we turn it
21. 21.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a medicine dropper (d) a drinking straw
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) whether the card stays (b) the same card (c) how full the glass is
23. 23.True or false: a medicine dropper works by magnetism. (a) True (b) False
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
26. 26.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
27. 27.⚖️ 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) False (b) True
28. 28.⚖️ 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
29. 29.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
31. 31.⚖️ 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
32. 32.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.True or false: a fridge magnet works by magnetism. (a) True (b) False
34. 34.True or false: a compass needle works by air pressure. (a) False (b) True
35. 35.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.⚖️ 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 what we measure. (a) False (b) True
37. 37.⚖️ 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 card (b) how full the glass is (c) whether the card stays (d) the way we turn it
38. 38.True or false: a suction hook works by magnetism. (a) False (b) True
39. 39.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
40. 40.True or false: a suction hook works by air pressure. (a) False (b) True

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