Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 296 · 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.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
3. 3.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a magnet (d) a stiff postcard
5. 5.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: a medicine dropper works by air pressure. (a) True (b) False
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a fridge magnet (d) a medicine dropper
10. 10.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a towel
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.⚖️ 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) False (b) True
16. 16.⚖️ 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
17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
18. 18.⚖️ 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) whether the card stays (c) the same glass (d) the way we turn it
19. 19.⚖️ 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
20. 20.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.⚖️ 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 what we measure. (a) False (b) True
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a stiff postcard (d) a glass of water
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🧺 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 glass of water (d) turmeric powder
32. 32.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a magnetic chess set (d) a fridge magnet
33. 33.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a medicine dropper (d) a drinking straw
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
35. 35.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a bicycle pump
37. 37.🧺 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 towel
38. 38.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) sunlight (c) friction (d) air pressure
39. 39.⚖️ 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
40. 40.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False

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