Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 162 · 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 of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a stiff postcard (d) a balloon
2. 2.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
3. 3.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a magnetic chess set (d) a drinking straw
4. 4.⚖️ 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
5. 5.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a suction hook (d) a compass needle
7. 7.True or false: a fridge magnet works by air pressure. (a) True (b) False
8. 8.🔍 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 water turns to ice (c) the glass breaks (d) the card flies away
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
12. 12.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a bicycle pump (d) a vacuum cleaner
13. 13.⚖️ 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
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
15. 15.⚖️ 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 kept the same. (a) True (b) False
16. 16.⚖️ 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) whether the card stays (c) the same card (d) the same glass
17. 17.⚖️ 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
18. 18.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot
19. 19.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🧺 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 magnet (c) a glass of water (d) a stiff postcard
21. 21.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
24. 24.True or false: a bicycle pump works by magnetism. (a) False (b) True
25. 25.🛟 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
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a compass needle
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic pin holder
33. 33.⚖️ 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
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a towel (d) turmeric powder
37. 37.⚖️ 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 card (c) the way we turn it (d) the same glass
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a balloon (d) a sink or a bucket

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