Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 979 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
3. 3.True or false: a suction hook works by air pressure. (a) True (b) False
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a glass of water (d) a sink or a bucket
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.⚖️ 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 way we turn it (b) the same card (c) the same glass (d) how full the glass is
8. 8.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a stiff postcard (d) a sink or a bucket
11. 11.⚖️ 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
12. 12.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 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 mirror
15. 15.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
16. 16.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
20. 20.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.⚖️ 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) False (b) True
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a glass of water
24. 24.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.True or false: a drinking straw works by air pressure. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a bicycle pump (d) a fridge magnet
28. 28.🔍 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 water turns to ice (c) the glass breaks (d) the card stays on
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a glass of water (d) a balloon
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic chess set (d) a magnetic pin holder
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a stiff postcard (d) a glass of water
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a balloon (d) a battery cell
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a bicycle pump
39. 39.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
40. 40.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False

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