Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 143 · 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 suction hook works by air pressure. (a) False (b) True
2. 2.⚖️ 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
3. 3.🧺 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) a magnet (d) a sink or a bucket
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a sink or a bucket (d) a balloon
5. 5.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
6. 6.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a balloon
9. 9.🛟 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
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a towel (d) a glass of water
11. 11.⚖️ 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) the same glass (b) how full the glass is (c) whether the card stays
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
13. 13.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
15. 15.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the cap is sticky (d) the bottle is magnetic
17. 17.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
20. 20.True or false: a bicycle pump works by air pressure. (a) True (b) False
21. 21.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.True or false: a drinking straw works by air pressure. (a) False (b) True
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) yeast (d) a stiff postcard
24. 24.⚖️ 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
25. 25.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a magnetic pin holder (d) a drinking straw
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the water turns to ice (d) the card stays on
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
31. 31.⚖️ 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) whether the card stays (d) the way we turn it
32. 32.⚖️ 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 the one thing we change. (a) True (b) False
33. 33.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) turmeric powder (d) a towel
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a magnet
40. 40.🥛 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

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