Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 292 · 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.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
2. 2.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic pin holder (d) a drinking straw
3. 3.🔍 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 water turns to ice (c) the card flies away (d) the glass breaks
4. 4.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
5. 5.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.⚖️ 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
7. 7.True or false: a medicine dropper works by magnetism. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a drinking straw
9. 9.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
11. 11.🧺 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
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a towel (d) a stiff postcard
13. 13.True or false: a fridge magnet works by magnetism. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a bicycle pump (d) a medicine dropper
15. 15.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a vacuum cleaner (c) a suction hook (d) a drinking straw
16. 16.🧺 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 towel (d) a battery cell
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic chess set
21. 21.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a balloon
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a magnet (d) yeast
24. 24.True or false: a drinking straw works by air pressure. (a) False (b) True
25. 25.True or false: a suction hook works by air pressure. (a) False (b) True
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.⚖️ 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
28. 28.⚖️ 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 same card (d) how full the glass is
29. 29.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a fridge magnet (d) a medicine dropper
30. 30.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ 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) the way we turn it (c) whether the card stays (d) how full the glass is
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a stiff postcard (d) a glass of water
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🧺 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 mirror (d) a glass of water
36. 36.🥛 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
37. 37.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.True or false: a fridge magnet works by air pressure. (a) False (b) True
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a battery cell (d) a magnet
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water

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