Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 897 · 40 questions

What you do (Pull down, lift up): 1. Push the pencil through the thread reel; an adult holds the pencil ends level. 2. Tie the paper cup to one end of the string and lay the string over the reel. 3. Put coins in the cup and pull the other end down. 4. Feel how hard you pull; never stand under the load or wrap string round your fingers.

1. 1.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) how hard we must pull (b) the same cup of coins (c) number of pulleys
2. 2.⚙️ Which simple machine is a bottle opener? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
3. 3.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a magnet (c) a pencil (d) coins as the load
4. 4.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the flagpole (b) on the blackboard (c) in the tap (d) on the bench
5. 5.⚙️ Which of these is a lever? (a) a bottle opener (b) a doorknob (c) a ramp (d) a tap handle
6. 6.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
7. 7.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) in a circle (c) down (d) sideways
8. 8.True or false: a bottle opener is an inclined plane. (a) True (b) False
9. 9.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) coins as the load (b) turmeric powder (c) a small paper cup (d) a pencil
10. 10.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is the one thing we change? (a) the same cup of coins (b) number of pulleys (c) how hard we must pull (d) the lifting height
11. 11.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is the one thing we change. (a) True (b) False
12. 12.True or false: a small paper cup is not needed for the thread-reel pulley. (a) True (b) False
13. 13.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) a pencil (c) coins as the load (d) a small paper cup
14. 14.True or false: a flagpole uses a pulley. (a) True (b) False
15. 15.True or false: a spoon lifting a lid is a lever. (a) False (b) True
16. 16.🛟 Why should you not wrap the string around your finger? (a) it turns blue (b) it can hurt your finger (c) it gets longer (d) it gets wet
17. 17.True or false: coins as the load is needed for the thread-reel pulley. (a) True (b) False
18. 18.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) number of pulleys (b) how hard we must pull (c) the same string (d) the lifting height
19. 19.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 20 cm (b) 5 cm (c) 10 cm (d) 40 cm
20. 20.⚙️ Which of these is an inclined plane? (a) a flagpole (b) a crowbar (c) a sloping road (d) a steering wheel
21. 21.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) coins as the load (c) yeast (d) a pencil
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is kept the same. (a) True (b) False
23. 23.⚙️ Which simple machine is a slide? (a) an inclined plane (b) a lever (c) a wheel and axle (d) a pulley
24. 24.True or false: a ramp is an inclined plane. (a) False (b) True
25. 25.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
26. 26.⚙️ Which simple machine is a tap handle? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
27. 27.📘 A pulley is a wheel with a groove for a ___. (a) rope (b) battery (c) magnet (d) nail
28. 28.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
29. 29.🛟 Why should you never stand under a load being lifted? (a) it gets hot (b) it could fall on you (c) it is magnetic (d) it might sing
30. 30.True or false: a tap handle is a lever. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the thread-reel pulley? (a) not needed (b) needed
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) False (b) True
33. 33.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) coins as the load (c) turmeric powder (d) a battery cell
34. 34.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) changes pull direction (c) adds weight (d) halves the weight
35. 35.True or false: string is needed for the thread-reel pulley. (a) False (b) True
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) False (b) True
37. 37.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
38. 38.🧺 Which of these is not needed for the thread-reel pulley? (a) string (b) a small paper cup (c) an empty thread reel (d) a mirror
39. 39.🧺 Which of these is needed for the thread-reel pulley? (a) a balloon (b) string (c) a battery cell (d) a magnet
40. 40.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we measure it (b) we keep it the same (c) we change it

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