Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 269 · 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.True or false: a steering wheel uses a pulley. (a) False (b) True
2. 2.True or false: a bottle opener is an inclined plane. (a) True (b) False
3. 3.⚙️ Which simple machine is a steering wheel? (a) a pulley (b) a wheel and axle (c) a lever (d) an inclined plane
4. 4.True or false: a ramp is a lever. (a) True (b) False
5. 5.True or false: a slide is a wheel and axle. (a) True (b) False
6. 6.⚙️ Which simple machine is a crane? (a) a pulley (b) a lever (c) a wheel and axle (d) an inclined plane
7. 7.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) water gets lighter (c) pulling down is easier (d) the rope gets shorter
8. 8.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) up (b) sideways (c) in a circle (d) down
9. 9.🧺 Do we need a mirror for the thread-reel pulley? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) a small paper cup (c) a mirror (d) coins as the load
11. 11.📘 A pulley is a wheel with a groove for a ___. (a) battery (b) nail (c) magnet (d) rope
12. 12.⚙️ Which simple machine is a spoon lifting a lid? (a) an inclined plane (b) a pulley (c) a lever (d) a wheel and axle
13. 13.True or false: a magnet is not needed for the thread-reel pulley. (a) False (b) True
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: number of pulleys is kept the same. (a) True (b) False
15. 15.True or false: a battery cell is needed for the thread-reel pulley. (a) True (b) False
16. 16.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) harder (b) easier (c) impossible (d) the same
17. 17.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a bottle opener (c) a crane (d) a ramp
18. 18.True or false: string is not needed for the thread-reel pulley. (a) True (b) False
19. 19.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the same cup of coins”? (a) we change it (b) we keep it the same (c) we measure it
20. 20.⚙️ Which simple machine is a crowbar? (a) an inclined plane (b) a wheel and axle (c) a lever (d) a pulley
21. 21.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it could fall on you (d) it might sing
22. 22.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a pencil (b) string (c) yeast (d) an empty thread reel
23. 23.⚙️ Which simple machine is a well pulley? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
24. 24.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is kept the same. (a) False (b) True
25. 25.True or false: a pencil is not needed for the thread-reel pulley. (a) False (b) True
26. 26.⚙️ Which simple machine is a bottle opener? (a) a wheel and axle (b) an inclined plane (c) a pulley (d) a lever
27. 27.True or false: a mirror is not needed for the thread-reel pulley. (a) False (b) True
28. 28.⚙️ Which of these is an inclined plane? (a) a sloping road (b) a crowbar (c) a flagpole (d) a doorknob
29. 29.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we keep it the same (b) we change it (c) we measure it
31. 31.🏗️ What does a single fixed pulley mainly do? (a) makes it magnetic (b) adds weight (c) halves the weight (d) changes pull direction
32. 32.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same cup of coins is the one thing we change. (a) True (b) False
33. 33.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is what we measure. (a) True (b) False
34. 34.True or false: a sloping road is an inclined plane. (a) True (b) False
35. 35.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “number of pulleys”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) number of pulleys (b) how hard we must pull (c) the same cup of coins
37. 37.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) an empty thread reel (c) coins as the load (d) turmeric powder
38. 38.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a mirror (c) yeast (d) coins as the load
39. 39.⚙️ Which simple machine is a slide? (a) a lever (b) a pulley (c) an inclined plane (d) a wheel and axle
40. 40.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) on the flagpole (d) in the tap

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