Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 470 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a battery cell (d) a towel
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.True or false: a compass needle works by magnetism. (a) False (b) True
4. 4.⚖️ 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 what we measure. (a) True (b) False
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a magnet (d) a battery cell
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a magnet (d) turmeric powder
7. 7.⚖️ 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
8. 8.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a balloon (d) a glass of water
10. 10.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a balloon
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a magnet (d) a stiff postcard
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
15. 15.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a stiff postcard (d) a sink or a bucket
18. 18.True or false: a fridge magnet works by air pressure. (a) False (b) True
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a mirror (d) a towel
21. 21.🔍 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 stays on (c) the water turns to ice (d) the card flies away
22. 22.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
23. 23.🧺 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 glass of water
24. 24.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
25. 25.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) yeast (d) a sink or a bucket
27. 27.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) a magnet (d) air pushing up
28. 28.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.⚖️ 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) whether the card stays (c) the same glass (d) the same card
30. 30.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic pin holder (d) a bicycle pump
31. 31.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
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 same glass”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the cap is sticky (d) the bottle is magnetic
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a bicycle pump (d) a compass needle
38. 38.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ 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 card (b) how full the glass is (c) the same glass (d) the way we turn it
40. 40.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a bicycle pump (d) a drinking straw

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