Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 746 · 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 kept the same? (a) the way we turn it (b) whether the card stays (c) how full the glass is
2. 2.⚖️ 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 card (d) whether the card stays
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a mirror (d) a magnet
4. 4.⚖️ 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 what we measure. (a) True (b) False
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a medicine dropper (d) a compass needle
6. 6.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a drinking straw
7. 7.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) a battery cell
9. 9.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.⚖️ 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) True (b) False
11. 11.⚖️ 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) False (b) True
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
13. 13.True or false: a mirror is not needed for the card-on-a-glass trick. (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) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
18. 18.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
21. 21.⚖️ 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 change it (c) we measure it
22. 22.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🔮 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
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a balloon (d) a glass of water
26. 26.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a bicycle pump (d) a fridge magnet
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a towel (d) yeast
29. 29.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
30. 30.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
32. 32.🛟 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
33. 33.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
34. 34.🧺 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 battery cell (d) a glass of water
35. 35.⚖️ 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 way we turn it (b) how full the glass is (c) whether the card stays (d) the same card
36. 36.🧺 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 mirror (d) a glass of water
37. 37.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a bicycle pump (d) a suction hook
38. 38.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
39. 39.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a compass needle (d) a magnetic chess set
40. 40.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True

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