Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 50 · 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.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
2. 2.True or false: a bicycle pump works by magnetism. (a) True (b) False
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) yeast
6. 6.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a medicine dropper
10. 10.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.⚖️ 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 what we measure. (a) False (b) True
12. 12.⚖️ 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 kept the same. (a) False (b) True
13. 13.🧺 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 glass of water (d) a battery cell
14. 14.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🛟 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
16. 16.🧺 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) a battery cell
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) yeast
18. 18.True or false: a bicycle pump works by air pressure. (a) False (b) True
19. 19.⚖️ 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
20. 20.⚖️ 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) the same glass (d) whether the card stays
21. 21.⚖️ 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) how full the glass is (d) the way we turn it
22. 22.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
24. 24.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
25. 25.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.⚖️ 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
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) whether the card stays (b) how full the glass is (c) the same card
29. 29.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a bicycle pump
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) yeast (d) a balloon
32. 32.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
34. 34.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a battery cell (d) a stiff postcard
36. 36.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a bicycle pump (d) a compass needle
37. 37.True or false: a compass needle works by air pressure. (a) True (b) False
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a magnet (d) a battery cell
39. 39.⚖️ 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
40. 40.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a bicycle pump

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