Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 392 · 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.⚖️ 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
3. 3.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.⚖️ 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
5. 5.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
7. 7.True or false: a fridge magnet works by magnetism. (a) True (b) False
8. 8.⚖️ 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) the same card (b) whether the card stays (c) the same glass (d) the way we turn it
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (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 “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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) the way we turn it (c) how full the glass is (d) the same card
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 compass needle works by magnetism. (a) True (b) False
14. 14.🧺 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 battery cell (d) a towel
15. 15.⚖️ 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 same card (c) how full the glass is
16. 16.⚖️ 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) False (b) True
17. 17.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a towel (d) a glass of water
19. 19.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
20. 20.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.⚖️ 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) False (b) True
24. 24.True or false: a fridge magnet works by air pressure. (a) True (b) False
25. 25.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
28. 28.🧺 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 magnet (d) a glass of water
29. 29.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a medicine dropper (d) a fridge magnet
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
32. 32.🥛 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
33. 33.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a magnetic chess set
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) air inside pushes back (d) the cap is sticky
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
37. 37.True or false: a drinking straw works by air pressure. (a) True (b) False
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
40. 40.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a compass needle

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