Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 745 · 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.⚖️ 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 way we turn it (c) the same glass (d) whether the card stays
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
3. 3.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a compass needle
4. 4.⚖️ 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 measure it (b) we change it (c) we keep it the same
5. 5.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) the cold water (d) glue on the card
6. 6.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a glass of water (d) a mirror
8. 8.⚖️ 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
9. 9.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.True or false: a drinking straw works by magnetism. (a) True (b) False
11. 11.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) the card gets wet (d) it looks nicer
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
13. 13.True or false: a bicycle pump works by air pressure. (a) False (b) True
14. 14.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
15. 15.🧺 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) a balloon
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a battery cell
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 towel (c) turmeric powder (d) a stiff postcard
18. 18.🧺 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
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a battery cell (d) a mirror
20. 20.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a bicycle pump (d) a medicine dropper
22. 22.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a compass needle
23. 23.🧺 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) yeast (d) a stiff postcard
24. 24.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
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) True (b) False
27. 27.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
30. 30.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
31. 31.⚖️ 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) the way we turn it (c) whether the card stays
32. 32.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.⚖️ 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) True (b) False
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
35. 35.⚖️ 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 glass (b) whether the card stays (c) the same card (d) how full the glass is
36. 36.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism

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