Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 675 · 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? 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 way we turn it
2. 2.🧺 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 towel (d) a magnet
3. 3.⚖️ 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 way we turn it (c) how full the glass is
4. 4.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
5. 5.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a compass needle
6. 6.🧺 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 towel (d) turmeric powder
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a balloon (d) a sink or a bucket
8. 8.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
9. 9.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a compass needle (d) a suction hook
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.⚖️ 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
13. 13.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) water is heavier (d) the card gets wet
14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
15. 15.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
19. 19.⚖️ 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 same glass (c) how full the glass is (d) the same card
20. 20.⚖️ 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 keep it the same (b) we measure it (c) we change it
21. 21.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
23. 23.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
25. 25.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
26. 26.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a bicycle pump (d) a vacuum cleaner
27. 27.True or false: a drinking straw works by air pressure. (a) True (b) False
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
29. 29.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ 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
33. 33.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.True or false: a magnetic chess set works by magnetism. (a) False (b) True
35. 35.🛟 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
36. 36.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🔮 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
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a glass of water (d) yeast
39. 39.True or false: a drinking straw works by magnetism. (a) False (b) True
40. 40.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on

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