Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 551 · 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 of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
2. 2.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
3. 3.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass
4. 4.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.⚖️ 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
6. 6.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🧺 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 balloon
8. 8.⚖️ 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 same card (b) the same glass (c) the way we turn it (d) how full the glass is
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
10. 10.⚖️ 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) False (b) True
11. 11.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic pin holder
14. 14.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
15. 15.🧺 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 towel (c) a battery cell (d) a stiff postcard
16. 16.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
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 what we measure. (a) False (b) True
18. 18.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) turmeric powder (d) a glass of water
20. 20.🧺 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) yeast
21. 21.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a medicine dropper (d) a bicycle pump
22. 22.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
23. 23.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.True or false: a drinking straw works by air pressure. (a) False (b) True
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 measure it (b) we keep it the same (c) we change it
26. 26.⚖️ 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
27. 27.🧺 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
28. 28.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
29. 29.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a suction hook
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
31. 31.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a fridge magnet (d) a suction hook
33. 33.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a stiff postcard (d) a battery cell
36. 36.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.True or false: a magnetic chess set works by air pressure. (a) False (b) True
39. 39.⚖️ 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) the same card (c) the same glass (d) whether the card stays
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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