Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 941 · 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) a balloon (b) yeast (c) a battery cell (d) a sink or a bucket
2. 2.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a magnet (d) a battery cell
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a magnetic chess set
6. 6.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (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 kept the same? (a) whether the card stays (b) the same glass (c) how full the glass is
8. 8.🥛 Does a drinking straw 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? True or false: how full the glass is is the one thing we change. (a) True (b) False
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a bicycle pump (c) a drinking straw (d) a suction hook
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a towel (d) a stiff postcard
17. 17.⚖️ 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) the way we turn it (c) whether the card stays (d) the same glass
18. 18.⚖️ 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) True (b) False
19. 19.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a compass needle
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) turmeric powder (d) a glass of water
21. 21.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 what we measure. (a) True (b) False
25. 25.🛟 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
26. 26.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
29. 29.⚖️ 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 way we turn it (b) whether the card stays (c) the same card (d) how full the glass is
30. 30.⚖️ 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
31. 31.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a drinking straw
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
35. 35.⚖️ 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
36. 36.🧺 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 balloon (d) a stiff postcard
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
38. 38.⚖️ 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
39. 39.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) it looks nicer (d) water is heavier
40. 40.True or false: a medicine dropper works by magnetism. (a) False (b) True

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