Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 618 · 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: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.⚖️ 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
5. 5.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a suction hook (d) a compass needle
6. 6.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a mirror (d) a stiff postcard
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a medicine dropper
9. 9.⚖️ 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 the one thing we change. (a) False (b) True
10. 10.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a magnetic chess set (d) a suction hook
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a balloon
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a towel (d) a stiff postcard
15. 15.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
17. 17.True or false: a magnetic chess set works by magnetism. (a) True (b) False
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) how full the glass is (b) the same card (c) the way we turn it (d) whether the card stays
19. 19.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
21. 21.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
24. 24.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a suction hook
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
31. 31.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
32. 32.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a magnetic pin holder (d) a bicycle pump
33. 33.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
34. 34.True or false: a bicycle pump works by air pressure. (a) True (b) False
35. 35.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
36. 36.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
37. 37.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
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 stiff postcard (c) a glass of water (d) turmeric powder
39. 39.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.⚖️ 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) True (b) False

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