Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 760 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a mirror (d) a glass of water
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a glass of water (d) a towel
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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 card
5. 5.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the water turns to ice (d) the card stays on
6. 6.⚖️ 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 glass (c) how full the glass is
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) turmeric powder
8. 8.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a sink or a bucket (d) a glass of water
10. 10.True or false: a magnetic chess set works by magnetism. (a) True (b) False
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
12. 12.🧺 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 magnet (d) a glass of water
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
14. 14.⚖️ 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
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
16. 16.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
17. 17.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
19. 19.🥛 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
20. 20.🛟 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
21. 21.⚖️ 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) the way we turn it (b) the same card (c) the same glass (d) how full the glass is
22. 22.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.True or false: a compass needle works by air pressure. (a) True (b) False
24. 24.⚖️ 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
25. 25.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a compass needle
26. 26.🥤 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
27. 27.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ 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
29. 29.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
31. 31.⚖️ 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
32. 32.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: a bicycle pump works by air pressure. (a) False (b) True
34. 34.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
36. 36.⚖️ 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
37. 37.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
38. 38.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a vacuum cleaner
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a suction hook (d) a vacuum cleaner

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