Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 944 · 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.🧺 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) turmeric powder (d) a sink or a bucket
2. 2.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
3. 3.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to catch any spills (d) to cool the glass
5. 5.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.True or false: a compass needle works by air pressure. (a) False (b) True
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a balloon (d) a glass of water
9. 9.🧺 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) a towel (d) yeast
10. 10.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a battery cell (d) a stiff postcard
12. 12.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
14. 14.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet
15. 15.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a medicine dropper
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
17. 17.True or false: a bicycle pump works by magnetism. (a) True (b) False
18. 18.True or false: a medicine dropper works by air pressure. (a) False (b) True
19. 19.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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
21. 21.🔍 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
22. 22.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a magnetic chess set (d) a vacuum cleaner
23. 23.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
25. 25.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a medicine dropper
26. 26.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
27. 27.⚖️ 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) the same glass (c) whether the card stays (d) how full the glass is
28. 28.True or false: a drinking straw works by magnetism. (a) False (b) True
29. 29.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
31. 31.🧺 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 sink or a bucket (d) a magnet
32. 32.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.⚖️ 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) whether the card stays (c) the same card (d) the way we turn it
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
38. 38.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
39. 39.True or false: a fridge magnet works by magnetism. (a) True (b) False
40. 40.🥛 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

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