Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 894 · 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? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) yeast
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
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) water is hiding there (c) the cap is sticky (d) air inside pushes back
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) whether the card stays (b) the same card (c) how full the glass is (d) the same glass
8. 8.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder
9. 9.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.⚖️ 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) False (b) True
12. 12.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
13. 13.🧺 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 stiff postcard (d) a glass of water
14. 14.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.⚖️ 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
16. 16.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) turmeric powder (d) a towel
19. 19.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
21. 21.⚖️ 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) the way we turn it (c) whether the card stays
22. 22.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
23. 23.🔍 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 glass breaks (c) the card flies away (d) the card stays on
24. 24.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
25. 25.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a stiff postcard
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a drinking straw
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.⚖️ 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) True (b) False
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
33. 33.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a drinking straw (c) a medicine dropper (d) a vacuum cleaner
34. 34.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.⚖️ 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
37. 37.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.True or false: a compass needle works by magnetism. (a) False (b) True
39. 39.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism

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