Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 409 · 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.⚖️ 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) how full the glass is (c) the same card
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a towel (d) yeast
3. 3.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
5. 5.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.True or false: a suction hook works by magnetism. (a) True (b) False
8. 8.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a compass needle works by air pressure. (a) False (b) True
11. 11.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a glass of water (d) a magnet
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a medicine dropper (d) a magnetic pin holder
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
20. 20.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a magnetic pin holder
21. 21.⚖️ 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) True (b) False
22. 22.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) air pushing up (d) the cold water
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
25. 25.True or false: a suction hook works by air pressure. (a) False (b) True
26. 26.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
27. 27.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a drinking straw (d) a medicine dropper
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.⚖️ 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) how full the glass is (c) the same glass
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.⚖️ 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) the same card (c) how full the glass is (d) the way we turn it
36. 36.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a suction hook (d) a bicycle pump
39. 39.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
40. 40.⚖️ 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

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