Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 204 · 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.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
2. 2.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) magnetism (d) sunlight
3. 3.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a magnetic chess set
5. 5.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a bicycle pump (d) a vacuum cleaner
6. 6.⚖️ 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
7. 7.True or false: a medicine dropper works by magnetism. (a) True (b) False
8. 8.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
9. 9.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a battery cell
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
12. 12.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
15. 15.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
16. 16.🧺 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 stiff postcard (c) a towel (d) a balloon
17. 17.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.🥛 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
19. 19.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a compass needle (d) a drinking straw
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.⚖️ 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 measure it (c) we change it
24. 24.True or false: a bicycle pump works by air pressure. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a bicycle pump
26. 26.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 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 mirror (d) a stiff postcard
29. 29.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a towel
31. 31.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic chess set
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a glass of water (d) a towel
37. 37.🧺 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 magnet (d) a stiff postcard
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a magnet
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a suction hook (d) a fridge magnet
40. 40.⚖️ 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) the same card (c) how full the glass is

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