Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 49 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
2. 2.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a medicine dropper
4. 4.⚖️ 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 glass (d) the way we turn it
5. 5.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
6. 6.🥛 Which of these works by magnetism? (a) a drinking straw (b) a fridge magnet (c) a bicycle pump (d) a suction hook
7. 7.⚖️ 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 glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
8. 8.True or false: a compass needle works by air pressure. (a) False (b) True
9. 9.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🧺 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 glass of water (c) turmeric powder (d) a towel
11. 11.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) yeast (d) a magnet
13. 13.⚖️ 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
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
15. 15.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🔍 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 card stays on (d) the water turns to ice
17. 17.⚖️ 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) False (b) True
18. 18.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a stiff postcard (d) a sink or a bucket
20. 20.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
22. 22.True or false: a magnetic chess set works by air pressure. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a drinking straw (d) a suction hook
24. 24.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a towel
26. 26.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) friction (d) sunlight
28. 28.⚖️ 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 way we turn it
29. 29.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
30. 30.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a glass of water (d) a sink or a bucket
32. 32.⚖️ 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 keep it the same (b) we change it (c) we measure it
33. 33.⚖️ 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
34. 34.True or false: a drinking straw works by magnetism. (a) False (b) True
35. 35.⚖️ 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 same glass (c) whether the card stays
36. 36.⚖️ 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 kept the same. (a) False (b) True
37. 37.🧺 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
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
39. 39.🧺 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 glass of water (c) a magnet (d) a stiff postcard
40. 40.🥛 Does a drinking straw 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