Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 985 · 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.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
2. 2.True or false: a compass needle works by magnetism. (a) False (b) True
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
4. 4.True or false: a bicycle pump works by air pressure. (a) False (b) True
5. 5.⚖️ 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
6. 6.⚖️ 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 same glass (c) the way we turn it (d) whether the card stays
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
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 card”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 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 sink or a bucket (d) yeast
10. 10.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
13. 13.🥛 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
14. 14.🧺 Do we need a balloon 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? Which of these is what we measure? (a) the same glass (b) whether the card stays (c) the way we turn it (d) the same card
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a mirror (d) yeast
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
21. 21.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a fridge magnet
22. 22.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🧺 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 stiff postcard (c) a magnet (d) a glass of water
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
25. 25.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🔍 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
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a battery cell (d) a stiff postcard
32. 32.True or false: a medicine dropper works by magnetism. (a) False (b) True
33. 33.⚖️ 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
34. 34.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) the card gets wet (d) little air left inside
35. 35.🧺 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 mirror
36. 36.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
37. 37.⚖️ 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 keep it the same (b) we change it (c) we measure it
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a towel (d) a balloon
39. 39.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a fridge magnet

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