Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 42 · 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.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
2. 2.⚖️ 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
3. 3.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is the one thing we change. (a) False (b) True
8. 8.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.⚖️ 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) the same glass (c) whether the card stays
10. 10.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
11. 11.True or false: a compass needle works by magnetism. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a vacuum cleaner
13. 13.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.⚖️ 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
16. 16.True or false: a magnetic chess set works by magnetism. (a) False (b) True
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
18. 18.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a balloon (d) a sink or a bucket
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
21. 21.True or false: a drinking straw works by magnetism. (a) True (b) False
22. 22.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is kept the same. (a) True (b) False
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.True or false: a medicine dropper works by magnetism. (a) True (b) False
27. 27.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a mirror
30. 30.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
31. 31.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a magnetic pin holder
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
34. 34.⚖️ 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) whether the card stays (c) the way we turn it (d) how full the glass is
35. 35.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
37. 37.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
38. 38.⚖️ 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
39. 39.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism

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