Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 591 · 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.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
3. 3.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 same glass (b) whether the card stays (c) the way we turn it (d) how full the glass is
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a glass of water (d) a magnet
9. 9.⚖️ 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) False (b) True
10. 10.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
11. 11.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.⚖️ 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
14. 14.🛟 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
15. 15.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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) True (b) False
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a magnet (d) a sink or a bucket
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a balloon (d) a towel
19. 19.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a battery cell (d) a stiff postcard
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a towel
22. 22.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic pin holder
23. 23.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a towel
26. 26.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
28. 28.⚖️ 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
29. 29.True or false: a suction hook works by air pressure. (a) False (b) True
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
32. 32.True or false: a stiff postcard is not 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? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
36. 36.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
38. 38.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a towel
40. 40.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a bicycle pump (d) a medicine dropper

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