Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 230 · 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.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
2. 2.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a suction hook (d) a magnetic chess set
3. 3.True or false: a compass needle works by air pressure. (a) False (b) True
4. 4.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is (d) the same card
5. 5.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a compass needle
8. 8.⚖️ 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
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
10. 10.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a drinking straw
11. 11.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a compass needle (d) a bicycle pump
12. 12.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
13. 13.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a mirror (d) a glass of water
17. 17.⚖️ 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 change it (b) we keep it the same (c) we measure it
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 sink or a bucket (c) a stiff postcard (d) turmeric powder
19. 19.⚖️ 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) True (b) False
20. 20.🧺 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) yeast (d) a sink or a bucket
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up
24. 24.⚖️ 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) how full the glass is (c) the same card (d) the same glass
25. 25.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
27. 27.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a battery cell (d) turmeric powder
29. 29.True or false: a suction hook works by magnetism. (a) False (b) True
30. 30.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a magnetic chess set (d) a drinking straw
31. 31.⚖️ 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) how full the glass is (c) the same card
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
33. 33.True or false: a medicine dropper works by magnetism. (a) True (b) False
34. 34.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a drinking straw (d) a bicycle pump
36. 36.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
38. 38.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🛟 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

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