Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 911 · 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.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a compass needle (c) a drinking straw (d) a suction hook
3. 3.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
5. 5.🧺 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 glass of water (d) a battery cell
6. 6.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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 what we measure. (a) True (b) False
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
10. 10.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a sink or a bucket (d) turmeric powder
12. 12.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (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 towel (b) a stiff postcard (c) yeast (d) a glass of water
14. 14.🧺 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 balloon
15. 15.⚖️ 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) how full the glass is (b) the same glass (c) the same card (d) the way we turn it
16. 16.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we keep it the same (c) we measure it
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
18. 18.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
19. 19.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) a mirror (d) a balloon
22. 22.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a bicycle pump (d) a medicine dropper
24. 24.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
25. 25.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a mirror (d) a battery cell
27. 27.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
30. 30.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
32. 32.🔍 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 stays on (d) the card flies away
33. 33.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
36. 36.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a bicycle pump
38. 38.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.True or false: a suction hook works by air pressure. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner

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