Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 561 · 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.⚖️ 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 measure it (b) we keep it the same (c) we change it
2. 2.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.⚖️ 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
5. 5.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a sink or a bucket (d) a glass of water
7. 7.🧺 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 stiff postcard
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
10. 10.⚖️ 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
11. 11.⚖️ 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 what we measure. (a) False (b) True
12. 12.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
14. 14.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a medicine dropper (d) a fridge magnet
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
17. 17.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
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 same glass”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🔍 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 card stays on (c) the glass breaks (d) the card flies away
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a magnetic chess set
24. 24.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
26. 26.🧺 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 balloon (c) a towel (d) a glass of water
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a mirror (d) a sink or a bucket
28. 28.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
29. 29.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
30. 30.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a battery cell (d) a sink or a bucket
33. 33.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a magnetic chess set
34. 34.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic chess set (d) a suction hook
38. 38.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: yeast 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? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it

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