Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 241 · 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.⚖️ 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) True (b) False
2. 2.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
3. 3.⚖️ 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 way we turn it (b) how full the glass is (c) the same card (d) whether the card stays
4. 4.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a mirror (d) a sink or a bucket
6. 6.⚖️ 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
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 card (b) how full the glass is (c) the same glass (d) whether the card stays
8. 8.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
10. 10.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🧺 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 glass of water (d) a battery cell
12. 12.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a drinking straw (d) a vacuum cleaner
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
16. 16.⚖️ 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
17. 17.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a bicycle pump
18. 18.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card stays on (c) the glass breaks (d) the card flies away
20. 20.⚖️ 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
21. 21.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
22. 22.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.⚖️ 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 same card
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
25. 25.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a towel (d) a glass of water
27. 27.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
28. 28.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a towel
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
31. 31.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a magnet (d) a battery cell
34. 34.True or false: a compass needle works by magnetism. (a) False (b) True
35. 35.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) turmeric powder (d) a glass of water
40. 40.True or false: a medicine dropper works by air pressure. (a) False (b) True

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