Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 513 · 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.True or false: a suction hook works by magnetism. (a) True (b) False
2. 2.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
4. 4.True or false: a magnetic chess set works by magnetism. (a) False (b) True
5. 5.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic pin holder
7. 7.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.True or false: a medicine dropper works by magnetism. (a) False (b) True
9. 9.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
10. 10.🧺 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 stiff postcard (d) yeast
11. 11.True or false: a magnetic chess set works by air pressure. (a) True (b) False
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a sink or a bucket
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
15. 15.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a medicine dropper
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a balloon
17. 17.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🧺 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 stiff postcard (d) a battery cell
19. 19.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a suction hook
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner
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) False (b) True
25. 25.⚖️ 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 what we measure. (a) False (b) True
26. 26.⚖️ 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 card (b) how full the glass is (c) whether the card stays (d) the way we turn it
27. 27.🧺 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 mirror (c) a towel (d) a glass of water
28. 28.🥤 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
29. 29.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) yeast
31. 31.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a towel
38. 38.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card

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