Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 355 · 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.True or false: a fridge magnet works by air pressure. (a) False (b) True
2. 2.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a magnet (d) a battery cell
4. 4.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
6. 6.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
7. 7.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
8. 8.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
10. 10.True or false: a bicycle pump works by magnetism. (a) True (b) False
11. 11.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.⚖️ 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
15. 15.🧺 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) a battery cell
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
17. 17.⚖️ 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
18. 18.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
19. 19.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
22. 22.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
23. 23.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
25. 25.⚖️ 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
26. 26.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
28. 28.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a balloon (d) a stiff postcard
30. 30.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
31. 31.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.⚖️ 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
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic pin holder (d) a fridge magnet
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a battery cell (d) a towel
37. 37.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
39. 39.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ 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

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