Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 701 · 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.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.True or false: a compass needle works by magnetism. (a) False (b) True
4. 4.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a sink or a bucket
7. 7.⚖️ 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 the one thing we change. (a) True (b) False
8. 8.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ 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 card (d) the same glass
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a sink or a bucket (d) a mirror
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
13. 13.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a compass needle (d) a vacuum cleaner
14. 14.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.True or false: a fridge magnet works by air pressure. (a) True (b) False
16. 16.🔍 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 glass breaks (c) the water turns to ice (d) the card stays on
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) True (b) False
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a towel (d) yeast
19. 19.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
21. 21.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a fridge magnet works by magnetism. (a) True (b) False
23. 23.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
24. 24.⚖️ 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
25. 25.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.⚖️ 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
27. 27.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
29. 29.⚖️ 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 what we measure. (a) True (b) False
30. 30.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
31. 31.True or false: a bicycle pump works by magnetism. (a) True (b) False
32. 32.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.⚖️ 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) whether the card stays (c) how full the glass is
35. 35.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a suction hook
37. 37.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
40. 40.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure

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