Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 531 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a balloon (d) a glass of water
2. 2.🔮 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 bottle is magnetic (d) the cap is sticky
3. 3.⚖️ 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
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a fridge magnet (d) a medicine dropper
7. 7.⚖️ 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) whether the card stays (b) the way we turn it (c) the same card (d) how full the glass is
8. 8.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a bicycle pump (d) a compass needle
11. 11.⚖️ 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
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.⚖️ 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) the way we turn it (c) how full the glass is (d) the same card
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a stiff postcard (d) a glass of water
18. 18.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a magnet (d) a sink or a bucket
21. 21.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
22. 22.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a battery cell (d) a magnet
24. 24.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic pin holder (d) a compass needle
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
29. 29.True or false: a fridge magnet works by magnetism. (a) True (b) False
30. 30.True or false: a suction hook works by magnetism. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a drinking straw (d) a bicycle pump
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.🛟 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
35. 35.True or false: a magnetic chess set works by air pressure. (a) True (b) False
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 the one thing we change. (a) False (b) True
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
38. 38.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
39. 39.🥛 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
40. 40.🧺 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 glass of water (d) a balloon

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