Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 361 · 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.⚖️ 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) whether the card stays (b) the same glass (c) the way we turn it (d) how full the glass is
2. 2.True or false: a suction hook works by magnetism. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
4. 4.⚖️ 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
5. 5.🔍 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 glass breaks (c) the card flies away (d) the water turns to ice
6. 6.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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) False (b) True
8. 8.⚖️ 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
9. 9.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
10. 10.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a towel (d) a sink or a bucket
14. 14.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.⚖️ 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 keep it the same (c) we change it
16. 16.🧺 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 stiff postcard (c) a glass of water (d) a magnet
17. 17.🛟 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
18. 18.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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) False (b) True
20. 20.True or false: a suction hook works by air pressure. (a) False (b) True
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.⚖️ 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 glass (c) the same card (d) the way we turn it
27. 27.⚖️ 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
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a stiff postcard (d) a battery cell
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a mirror
32. 32.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
34. 34.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) air pushes it up (d) juice likes plastic
35. 35.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
39. 39.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a sink or a bucket (d) a mirror

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