Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 640 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
2. 2.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a battery cell (d) yeast
5. 5.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a magnetic pin holder (d) a compass needle
7. 7.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a vacuum cleaner
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a battery cell (d) a mirror
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🔮 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
12. 12.⚖️ 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 same card (b) the way we turn it (c) how full the glass is (d) whether the card stays
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a stiff postcard (d) yeast
14. 14.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
15. 15.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
16. 16.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
17. 17.🧺 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 balloon (c) a glass of water (d) a stiff postcard
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a stiff postcard
19. 19.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a towel
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
22. 22.⚖️ 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) False (b) True
23. 23.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a compass needle
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 kept the same. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
26. 26.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
27. 27.🔍 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 card stays on (d) the water turns to ice
28. 28.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a magnetic chess set (d) a drinking straw
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
30. 30.⚖️ 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 kept the same. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a magnetic pin holder (d) a drinking straw
32. 32.⚖️ 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 glass (d) whether the card stays
33. 33.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a balloon (d) a battery cell
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a fridge magnet
39. 39.True or false: a bicycle pump works by magnetism. (a) False (b) True
40. 40.True or false: a medicine dropper works by air pressure. (a) True (b) False

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