Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 839 · 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 battery cell is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a balloon (c) a stiff postcard (d) a glass of water
5. 5.⚖️ 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 change it (c) we measure it
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
7. 7.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
8. 8.True or false: a suction hook works by magnetism. (a) False (b) True
9. 9.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
12. 12.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
14. 14.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) turmeric powder (d) a stiff postcard
16. 16.⚖️ 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) True (b) False
17. 17.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
18. 18.⚖️ 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
19. 19.⚖️ 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) whether the card stays (c) the way we turn it (d) the same glass
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a sink or a bucket (d) a glass of water
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
23. 23.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a magnetic chess set (d) a fridge magnet
24. 24.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a magnetic pin holder
25. 25.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a sink or a bucket (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
28. 28.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
29. 29.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card
30. 30.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a fridge magnet (d) a drinking straw
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
36. 36.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
37. 37.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 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) yeast (d) a stiff postcard

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