Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 519 · 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.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
3. 3.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
7. 7.⚖️ 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) whether the card stays (d) the same glass
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a balloon (d) a battery cell
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a glass of water (d) a sink or a bucket
10. 10.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
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 mirror (c) a sink or a bucket (d) a glass of water
14. 14.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
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 stiff postcard (d) yeast
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a drinking straw (d) a compass needle
18. 18.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
22. 22.🔍 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 card flies away (c) the water turns to ice (d) the glass breaks
23. 23.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is hot (d) the straw is magnetic
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) yeast (d) a magnet
27. 27.⚖️ 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 way we turn it (c) whether the card stays (d) the same card
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a magnet (d) a stiff postcard
31. 31.🧺 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 stiff postcard (d) a magnet
32. 32.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
33. 33.🧺 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 towel (c) a balloon (d) a glass of water
34. 34.🧺 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
35. 35.⚖️ 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) True (b) False
36. 36.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a bicycle pump (d) a fridge magnet
39. 39.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper

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