Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 724 · 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 works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
2. 2.⚖️ 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 glass (b) how full the glass is (c) the same card (d) whether the card stays
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a balloon
4. 4.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
5. 5.True or false: a fridge magnet works by air pressure. (a) True (b) False
6. 6.⚖️ 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
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a towel
10. 10.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
11. 11.⚖️ 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) True (b) False
12. 12.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
13. 13.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
17. 17.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
18. 18.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
19. 19.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.⚖️ 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 card (c) whether the card stays
22. 22.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
25. 25.🧺 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 magnet (d) a stiff postcard
26. 26.🛟 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
27. 27.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
28. 28.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ 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 way we turn it (c) how full the glass is
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a magnet (d) a sink or a bucket
31. 31.⚖️ 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
32. 32.True or false: a fridge magnet works by magnetism. (a) True (b) False
33. 33.True or false: a bicycle pump works by air pressure. (a) False (b) True
34. 34.True or false: a medicine dropper works by magnetism. (a) False (b) True
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
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 kept the same. (a) False (b) True
37. 37.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a compass needle
40. 40.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder

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