Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 92 · 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 a balloon for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
4. 4.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.⚖️ 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) the way we turn it (b) how full the glass is (c) whether the card stays (d) the same glass
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
7. 7.🧺 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) a sink or a bucket (d) a magnet
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) True (b) False
9. 9.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.⚖️ 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
12. 12.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
13. 13.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
14. 14.🧺 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 glass of water (d) turmeric powder
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.True or false: a magnetic chess set works by air pressure. (a) False (b) True
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
18. 18.⚖️ 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 way we turn it
19. 19.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
20. 20.True or false: a bicycle pump works by magnetism. (a) False (b) True
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a battery cell
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a balloon (d) a sink or a bucket
27. 27.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) water is heavier (d) the card gets wet
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a magnet
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a glass of water (d) a mirror
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a stiff postcard (d) a balloon
31. 31.True or false: a suction hook works by air pressure. (a) True (b) False
32. 32.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.⚖️ 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
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a medicine dropper
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a sink or a bucket (d) a magnet
38. 38.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
39. 39.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a drinking straw (d) a vacuum cleaner
40. 40.⚖️ 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

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