Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 328 · 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 not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (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: whether the card stays is the one thing we change. (a) True (b) False
3. 3.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
7. 7.⚖️ 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) False (b) True
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) yeast (d) a stiff postcard
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
12. 12.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a compass needle
13. 13.True or false: a drinking straw works by air pressure. (a) False (b) True
14. 14.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a vacuum cleaner
19. 19.⚖️ 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 what we measure. (a) True (b) False
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
21. 21.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
22. 22.⚖️ 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
23. 23.⚖️ 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) how full the glass is (c) the same glass (d) the same card
24. 24.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
25. 25.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a glass of water (d) a stiff postcard
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a glass of water (d) a stiff postcard
28. 28.True or false: a magnetic chess set works by magnetism. (a) True (b) False
29. 29.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
31. 31.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a magnetic chess set
33. 33.🧺 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
34. 34.🛟 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
35. 35.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a drinking straw (d) a compass needle
36. 36.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) friction (d) sunlight
37. 37.🥛 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
38. 38.🧺 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 glass of water (c) a towel (d) a balloon
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
40. 40.⚖️ 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

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