Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 736 · 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.⚖️ 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) how full the glass is (c) whether the card stays (d) the same card
2. 2.True or false: a suction hook works by magnetism. (a) False (b) True
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a magnet (d) a battery cell
5. 5.True or false: a drinking straw works by air pressure. (a) False (b) True
6. 6.🧺 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) a magnet
7. 7.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
8. 8.⚖️ 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) how full the glass is (c) the same card (d) whether the card stays
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a towel (d) a glass of water
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🔍 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 stays on (d) the card flies away
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
17. 17.🛟 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
18. 18.⚖️ 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
19. 19.True or false: a compass needle works by air pressure. (a) True (b) False
20. 20.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
23. 23.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a magnetic chess set (d) a bicycle pump
24. 24.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
25. 25.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
28. 28.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
35. 35.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.⚖️ 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) False (b) True
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a balloon (d) a glass of water
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a towel
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
40. 40.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a medicine dropper (d) a fridge magnet

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