Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 729 · 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 medicine dropper (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a towel (d) a stiff postcard
3. 3.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a fridge magnet (d) a drinking straw
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
5. 5.⚖️ 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 same card (b) whether the card stays (c) how full the glass is
6. 6.⚖️ 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
7. 7.⚖️ 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) False (b) True
8. 8.🧺 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 stiff postcard (d) a mirror
9. 9.🧺 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 glass of water (c) a magnet (d) a stiff postcard
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 change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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
12. 12.⚖️ 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 measure it (c) we change it
13. 13.⚖️ 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) True (b) False
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a drinking straw (d) a fridge magnet
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a glass of water
17. 17.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) magnetism (d) sunlight
18. 18.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
19. 19.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) water is heavier (d) it looks nicer
20. 20.⚖️ 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) True (b) False
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.⚖️ 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
27. 27.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
28. 28.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
29. 29.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a drinking straw (d) a vacuum cleaner
31. 31.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
33. 33.🥛 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
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.True or false: a compass needle works by magnetism. (a) False (b) True
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
38. 38.🧺 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) yeast (d) a towel
39. 39.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a glass of water (d) a battery cell

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