Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 577 · 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? True or false: the same glass is kept the same. (a) False (b) True
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a magnet (d) a balloon
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a towel (d) a stiff postcard
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
6. 6.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) turmeric powder (d) a glass of water
8. 8.⚖️ 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
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a balloon (d) a sink or a bucket
11. 11.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
13. 13.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet
14. 14.True or false: a compass needle works by magnetism. (a) False (b) True
15. 15.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
17. 17.🔍 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 flies away (c) the glass breaks (d) the card stays on
18. 18.⚖️ 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) True (b) False
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a balloon
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a sink or a bucket (d) a towel
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a compass needle
24. 24.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) turmeric powder
26. 26.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic chess set (d) a bicycle pump
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 same glass”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🧺 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) turmeric powder
30. 30.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
31. 31.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
32. 32.🧺 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 glass of water (d) a magnet
33. 33.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
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 is hotter (d) it will not break
35. 35.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a drinking straw works by magnetism. (a) True (b) False
38. 38.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
39. 39.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet

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