Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 798 · 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.🏗️ What does a single fixed pulley mainly do? (a) adds weight (b) makes it magnetic (c) changes pull direction (d) halves the weight
2. 2.⚙️ Which simple machine is a ramp? (a) a pulley (b) an inclined plane (c) a wheel and axle (d) a lever
3. 3.True or false: a small paper cup is needed for the thread-reel pulley. (a) False (b) True
4. 4.🧺 Do we need string for the thread-reel pulley? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) string (c) an empty thread reel (d) a magnet
6. 6.True or false: a bottle opener is an inclined plane. (a) False (b) True
7. 7.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) string (c) a pencil (d) an empty thread reel
8. 8.🛟 Why should you never stand under a load being lifted? (a) it is magnetic (b) it gets hot (c) it might sing (d) it could fall on you
9. 9.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “how hard we must pull”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.⚙️ Which of these is an inclined plane? (a) a well pulley (b) a slide (c) a flagpole (d) a bottle opener
11. 11.True or false: a tap handle uses a pulley. (a) True (b) False
12. 12.🧺 Which of these is needed for the thread-reel pulley? (a) coins as the load (b) yeast (c) a magnet (d) a mirror
13. 13.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) False (b) True
14. 14.⚖️ Fair test — is lifting the cup easier with one pulley or with two? What do we do with “the lifting height”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.True or false: a crowbar is an inclined plane. (a) True (b) False
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.🧺 Which of these is not needed for the thread-reel pulley? (a) a small paper cup (b) string (c) turmeric powder (d) an empty thread reel
18. 18.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) string (b) a battery cell (c) a small paper cup (d) an empty thread reel
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a mirror (b) coins as the load (c) a small paper cup (d) string
21. 21.⚙️ Which simple machine is a see-saw? (a) a lever (b) a wheel and axle (c) an inclined plane (d) a pulley
22. 22.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is kept the same? (a) the same string (b) how hard we must pull (c) number of pulleys
23. 23.⚙️ Which of these is a lever? (a) a well pulley (b) a crowbar (c) a flagpole (d) a tap handle
24. 24.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it gets wet (d) it turns blue
25. 25.True or false: a slide is an inclined plane. (a) False (b) True
26. 26.🇮🇳 Where do we see a pulley at school on Independence Day? (a) on the blackboard (b) on the bench (c) in the tap (d) on the flagpole
27. 27.🧺 Do we need a balloon for the thread-reel pulley? (a) not needed (b) needed
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Do we need a battery cell for the thread-reel pulley? (a) needed (b) not needed
30. 30.⚖️ Fair test — is lifting the cup easier with one pulley or with two? Which of these is what we measure? (a) the lifting height (b) the same string (c) number of pulleys (d) how hard we must pull
31. 31.True or false: an empty thread reel is not needed for the thread-reel pulley. (a) True (b) False
32. 32.⚙️ Which of these is a wheel and axle? (a) a slide (b) a well pulley (c) a spoon lifting a lid (d) a doorknob
33. 33.🏗️ Why is a pulley used to lift water from a deep well? (a) pulling down is easier (b) the rope gets shorter (c) water gets lighter (d) the bucket floats
34. 34.True or false: a balloon is needed for the thread-reel pulley. (a) True (b) False
35. 35.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) up (c) down (d) in a circle
36. 36.🧺 Do we need yeast for the thread-reel pulley? (a) not needed (b) needed
37. 37.⚙️ Which simple machine is a flagpole? (a) a wheel and axle (b) a pulley (c) an inclined plane (d) a lever
38. 38.🔮 With a moving pulley, to lift the cup 10 cm you must pull the string about ___. (a) 5 cm (b) 40 cm (c) 10 cm (d) 20 cm
39. 39.True or false: yeast is needed for the thread-reel pulley. (a) False (b) True
40. 40.⚙️ Which of these is an inclined plane? (a) a crowbar (b) a ramp (c) a bottle opener (d) a steering wheel

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