Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 250 · 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: a vacuum cleaner works by magnetism. (a) False (b) True
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
3. 3.🔍 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
4. 4.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a drinking straw
5. 5.⚖️ 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) whether the card stays (b) the same glass (c) the way we turn it (d) the same card
6. 6.🧺 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 magnet (d) a glass of water
7. 7.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
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 drinking straw
9. 9.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a sink or a bucket (d) a mirror
13. 13.⚖️ 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 same glass (b) whether the card stays (c) the same card (d) how full the glass is
14. 14.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a towel (d) a sink or a bucket
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
21. 21.⚖️ 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) True (b) False
22. 22.True or false: a medicine dropper works by air pressure. (a) True (b) False
23. 23.⚖️ 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) how full the glass is (c) whether the card stays
24. 24.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a compass needle works by magnetism. (a) False (b) True
29. 29.🔮 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 grow plants (d) to cool the glass
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
31. 31.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a suction hook (d) a bicycle pump
32. 32.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a magnetic pin holder (d) a fridge magnet
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) yeast (d) a sink or a bucket
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a towel (d) a sink or a bucket
36. 36.⚖️ 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
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.True or false: a fridge magnet works by magnetism. (a) True (b) False
40. 40.⚖️ 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) whether the card stays (c) the same glass

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