Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 274 · 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.🧺 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 stiff postcard (d) a balloon
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
3. 3.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
4. 4.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ 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) False (b) True
9. 9.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
10. 10.True or false: a magnetic chess set works by air pressure. (a) False (b) True
11. 11.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a towel
13. 13.⚖️ 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 same glass (c) how full the glass is
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 measure it (c) we keep it the same
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a balloon
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) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.🔮 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
21. 21.🧺 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 sink or a bucket (d) a towel
22. 22.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a magnet (d) a glass of water
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic pin holder (c) a drinking straw (d) a medicine dropper
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) yeast (d) a sink or a bucket
26. 26.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a medicine dropper
27. 27.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a drinking straw
29. 29.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic pin holder (d) a compass needle
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the water turns to ice (d) the card flies away
36. 36.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a magnetic chess set works by magnetism. (a) False (b) True
38. 38.⚖️ 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 card (b) whether the card stays (c) the same glass (d) how full the glass is
39. 39.⚖️ 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) the same card (b) how full the glass is (c) the way we turn it (d) the same glass
40. 40.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a bicycle pump

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