Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 166 · 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 stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a glass of water (d) a stiff postcard
3. 3.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a drinking straw (d) a magnetic chess set
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
5. 5.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.🛟 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
7. 7.⚖️ 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 change it (b) we measure it (c) we keep it the same
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
9. 9.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) turmeric powder
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a glass of water (d) a balloon
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ 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
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a vacuum cleaner
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a suction hook
23. 23.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
25. 25.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🔮 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
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a balloon (d) a towel
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a fridge magnet (d) a medicine dropper
31. 31.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🔍 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
35. 35.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
37. 37.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a vacuum cleaner (d) a drinking straw
38. 38.⚖️ 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
39. 39.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False

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