Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 365 · 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 is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
2. 2.🧺 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 sink or a bucket (d) a battery cell
3. 3.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a suction hook
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
6. 6.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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 card (b) the way we turn it (c) how full the glass is (d) whether the card stays
8. 8.🧺 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 mirror (d) a towel
9. 9.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
10. 10.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) 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 same glass is what we measure. (a) True (b) False
12. 12.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a vacuum cleaner (d) a magnetic chess set
13. 13.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.True or false: a compass needle 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? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) turmeric powder
18. 18.⚖️ 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 keep it the same (b) we measure it (c) we change it
19. 19.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
21. 21.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
22. 22.🧺 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 stiff postcard
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
28. 28.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
31. 31.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a magnetic pin holder
32. 32.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) False (b) True
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a towel
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🔍 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 glass breaks (d) the water turns to ice
37. 37.True or false: a bicycle pump works by air pressure. (a) False (b) True
38. 38.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
40. 40.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism

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