Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 864 · 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 magnet (b) a glass of water (c) yeast (d) a balloon
2. 2.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a suction hook (d) a compass needle
3. 3.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.True or false: a bicycle pump works by air pressure. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a suction hook (d) a fridge magnet
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
7. 7.🧺 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 magnet
8. 8.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
10. 10.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a towel (d) a sink or a bucket
12. 12.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
13. 13.⚖️ 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
14. 14.⚖️ 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 way we turn it (b) the same card (c) how full the glass is (d) whether the card stays
15. 15.⚖️ 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) whether the card stays (c) how full the glass is
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a stiff postcard (d) a magnet
19. 19.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
20. 20.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a magnet (d) a towel
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 kept the same. (a) False (b) True
23. 23.True or false: a medicine dropper works by magnetism. (a) True (b) False
24. 24.⚖️ 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 measure it (b) we change it (c) we keep it the same
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a magnetic chess set
26. 26.True or false: a suction hook works by air pressure. (a) False (b) True
27. 27.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.⚖️ 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
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
30. 30.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
31. 31.⚖️ 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 kept the same. (a) True (b) False
32. 32.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
33. 33.⚖️ 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) False (b) True
34. 34.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a towel (d) a stiff postcard
38. 38.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a drinking straw (d) a magnetic pin holder

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