Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 215 · 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 is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
5. 5.🧺 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 towel (d) a mirror
6. 6.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
8. 8.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a stiff postcard (d) a mirror
10. 10.⚖️ 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
11. 11.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
14. 14.🧺 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 magnet (c) a glass of water (d) a stiff postcard
15. 15.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a magnet
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
20. 20.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
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 keep it the same (b) we measure it (c) we change it
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) turmeric powder (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) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
25. 25.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
27. 27.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a bicycle pump (d) a vacuum cleaner
29. 29.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
30. 30.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
32. 32.⚖️ 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) True (b) False
33. 33.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
34. 34.True or false: a suction hook works by magnetism. (a) False (b) True
35. 35.⚖️ 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 same glass (b) whether the card stays (c) how full the glass is
36. 36.⚖️ 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) whether the card stays (d) the same card
37. 37.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False

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