Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 430 · 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.🧺 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 stiff postcard (d) a mirror
2. 2.⚖️ 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
3. 3.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a towel (d) yeast
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
7. 7.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a suction hook (d) a medicine dropper
8. 8.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
10. 10.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a magnetic chess set
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
12. 12.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
15. 15.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
20. 20.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
21. 21.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a glass of water
23. 23.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a drinking straw
24. 24.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
26. 26.⚖️ 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 glass (b) how full the glass is (c) whether the card stays
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
28. 28.True or false: a compass needle works by magnetism. (a) True (b) False
29. 29.🧺 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
30. 30.True or false: a suction hook works by magnetism. (a) True (b) False
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a fridge magnet works by magnetism. (a) True (b) False
33. 33.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
34. 34.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
37. 37.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
39. 39.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a suction hook
40. 40.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a medicine dropper

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