Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 771 · 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 works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a compass needle (d) a suction hook
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a mirror (c) a battery cell (d) yeast
3. 3.⚖️ 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 the one thing we change. (a) False (b) True
4. 4.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a magnet (d) a sink or a bucket
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
8. 8.⚖️ 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
9. 9.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
10. 10.True or false: a bicycle pump works by magnetism. (a) False (b) True
11. 11.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
13. 13.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
14. 14.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
15. 15.⚖️ 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 same glass (b) whether the card stays (c) the same card (d) how full the glass is
16. 16.⚖️ 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 way we turn it (c) how full the glass is
17. 17.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a magnet
19. 19.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
21. 21.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a glass of water (d) a balloon
23. 23.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 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
25. 25.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a stiff postcard (d) a balloon
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
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 same glass”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
30. 30.⚖️ 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
31. 31.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🧺 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 glass of water (d) a balloon
33. 33.True or false: a compass needle works by magnetism. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a compass needle (d) a drinking straw
35. 35.🥛 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
36. 36.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
38. 38.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
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 change it (b) we measure it (c) we keep it the same

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