Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 146 · 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.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🧺 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 glass of water (c) a towel (d) a balloon
3. 3.True or false: a suction hook works by magnetism. (a) False (b) True
4. 4.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) turmeric powder (d) a mirror
6. 6.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
8. 8.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the water turns to ice (d) the card flies away
9. 9.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a drinking straw (d) a suction hook
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 way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.True or false: a bicycle pump works by magnetism. (a) False (b) True
12. 12.⚖️ 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
13. 13.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.True or false: a drinking straw works by air pressure. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 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 glass of water (d) a battery cell
17. 17.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
18. 18.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
21. 21.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
22. 22.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) glue on the card (d) the cold water
23. 23.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a magnetic chess set
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) yeast (d) a stiff postcard
28. 28.⚖️ 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) how full the glass is (c) the same card (d) the same glass
29. 29.🛟 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
30. 30.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
31. 31.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.True or false: a fridge magnet works by magnetism. (a) False (b) True
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.⚖️ 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 change it (b) we keep it the same (c) we measure it
35. 35.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
36. 36.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
38. 38.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.⚖️ 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 glass (c) how full the glass is (d) whether the card stays

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