Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 932 · 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.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a medicine dropper
2. 2.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🧺 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 battery cell (c) a stiff postcard (d) a towel
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a battery cell (d) a glass of water
5. 5.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic chess set (d) a bicycle pump
6. 6.🔍 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 glass breaks (d) the card stays on
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
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) the way we turn it (b) the same card (c) how full the glass is (d) whether the card stays
10. 10.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a compass needle
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a magnet
12. 12.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a medicine dropper
13. 13.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🛟 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 heavier (d) it is hotter
16. 16.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a compass needle
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) turmeric powder
18. 18.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a medicine dropper
20. 20.⚖️ 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
21. 21.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.⚖️ 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 measure it (c) we change it
24. 24.⚖️ 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
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 the one thing we change. (a) False (b) True
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a glass of water (d) a sink or a bucket
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a bicycle pump
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a mirror (d) a glass of water
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a glass of water
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a battery cell
31. 31.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
32. 32.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
34. 34.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a vacuum cleaner
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) turmeric powder (d) a glass of water
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a sink or a bucket (d) turmeric powder
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
40. 40.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False

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