Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 540 · 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.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a balloon (d) a battery cell
2. 2.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a bicycle pump (c) a magnetic pin holder (d) a magnetic chess set
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a towel (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: the same glass is the one thing we change. (a) True (b) False
6. 6.🧺 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) a stiff postcard (d) a mirror
7. 7.True or false: a suction hook works by magnetism. (a) False (b) True
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 keep it the same (b) we measure it (c) we change it
9. 9.⚖️ 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) whether the card stays (b) the way we turn it (c) the same glass (d) the same card
10. 10.True or false: a medicine dropper works by air pressure. (a) True (b) False
11. 11.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
13. 13.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: a bicycle pump works by magnetism. (a) True (b) False
15. 15.⚖️ 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 kept the same. (a) True (b) False
16. 16.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a vacuum cleaner (d) a compass needle
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
19. 19.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a fridge magnet (d) a suction hook
20. 20.⚖️ 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) False (b) True
21. 21.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a medicine dropper (d) a compass needle
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the card stays on (d) the glass breaks
24. 24.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
26. 26.True or false: a magnetic chess set works by magnetism. (a) True (b) False
27. 27.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to make it rain (d) to grow plants
30. 30.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) it looks nicer (d) the card gets wet
31. 31.🧺 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 balloon (d) a glass of water
32. 32.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same glass
34. 34.True or false: a fridge magnet works by air pressure. (a) True (b) False
35. 35.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) on a bed (d) near a plug point
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 towel (c) a magnet (d) a glass of water
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) turmeric powder (d) a battery cell
38. 38.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.True or false: a medicine dropper works by magnetism. (a) True (b) False
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids