Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 363 · 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.🔮 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) the cap is sticky (d) air inside pushes back
2. 2.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a drinking straw (d) a compass needle
3. 3.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a drinking straw (d) a bicycle pump
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
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 kept the same. (a) True (b) False
6. 6.⚖️ 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) whether the card stays (d) how full the glass is
7. 7.⚖️ 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 card (b) how full the glass is (c) whether the card stays
8. 8.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.True or false: a medicine dropper works by magnetism. (a) True (b) False
11. 11.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
12. 12.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
13. 13.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.⚖️ 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 kept the same. (a) True (b) False
15. 15.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
18. 18.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water
19. 19.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🔍 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
25. 25.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) yeast
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.⚖️ 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 kept the same. (a) False (b) True
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a glass of water (d) a stiff postcard
31. 31.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
32. 32.⚖️ 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 change it (b) we measure it (c) we keep it the same
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) turmeric powder
34. 34.🔮 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
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) whether the card stays (b) the way we turn it (c) how full the glass is
36. 36.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) air pushes it up (d) juice likes plastic
38. 38.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🧺 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 stiff postcard (c) a glass of water (d) a battery cell
40. 40.True or false: a drinking straw works by air pressure. (a) True (b) False

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