Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 669 · 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? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: a suction hook works by magnetism. (a) True (b) False
3. 3.⚖️ 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
4. 4.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
7. 7.True or false: a medicine dropper works by magnetism. (a) True (b) False
8. 8.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
11. 11.🛟 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
12. 12.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.🧺 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 magnet (d) a glass of water
15. 15.🥛 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
16. 16.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 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 battery cell (d) a stiff postcard
19. 19.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
20. 20.⚖️ 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
21. 21.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the card flies away (d) the glass breaks
22. 22.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a suction hook (d) a drinking straw
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
24. 24.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.True or false: a drinking straw works by magnetism. (a) True (b) False
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a medicine dropper (d) a vacuum cleaner
28. 28.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the same glass
29. 29.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a drinking straw
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water
31. 31.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
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 stiff postcard (d) turmeric powder
33. 33.True or false: a compass needle works by air pressure. (a) False (b) True
34. 34.⚖️ 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 the one thing we change. (a) False (b) True
35. 35.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.True or false: a bicycle pump works by magnetism. (a) False (b) True
38. 38.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
40. 40.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet

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