Pulley STEM Project Worksheet

Science experiments lesson 25: Thread-reel pulley · Set 742 · 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? True or false: the same cup of coins is what we measure. (a) True (b) False
2. 2.🧺 Which of these is not needed for the thread-reel pulley? (a) a pencil (b) a small paper cup (c) string (d) a magnet
3. 3.🔮 Predict: you add a moving pulley that holds the cup. The pull needed becomes ___. (a) double (b) about half (c) the same (d) zero
4. 4.⚙️ Which of these is a lever? (a) a spoon lifting a lid (b) a flagpole (c) a doorknob (d) a well pulley
5. 5.⚖️ 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) number of pulleys (c) the same cup of coins
6. 6.🛟 Why should you not wrap the string around your finger? (a) it can hurt your finger (b) it gets longer (c) it turns blue (d) it gets wet
7. 7.🔮 Predict: you add more coins to the cup. Pulling it up gets ___. (a) impossible (b) harder (c) easier (d) the same
8. 8.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is the one thing we change. (a) True (b) False
9. 9.📘 A pulley is a wheel with a groove for a ___. (a) magnet (b) rope (c) nail (d) battery
10. 10.⚙️ Which simple machine is a steering wheel? (a) a wheel and axle (b) a lever (c) an inclined plane (d) a pulley
11. 11.True or false: a steering wheel is a lever. (a) True (b) False
12. 12.⚙️ Which of these is an inclined plane? (a) a tap handle (b) a well pulley (c) a crane (d) a sloping road
13. 13.⚙️ Which of these is an inclined plane? (a) a ramp (b) a doorknob (c) a crowbar (d) a steering wheel
14. 14.True or false: a flagpole is a lever. (a) False (b) True
15. 15.🏗️ With one fixed pulley, which way do you pull the string to lift the cup? (a) sideways (b) in a circle (c) down (d) up
16. 16.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the lifting height is kept the same. (a) True (b) False
17. 17.🧺 Which of these is needed for the thread-reel pulley? (a) a battery cell (b) a mirror (c) a magnet (d) an empty thread reel
18. 18.🛟 Why should you never stand under a load being lifted? (a) it could fall on you (b) it is magnetic (c) it might sing (d) it gets hot
19. 19.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a magnet (b) a pencil (c) a small paper cup (d) string
20. 20.⚙️ Which of these is an inclined plane? (a) a doorknob (b) a slide (c) a see-saw (d) a flagpole
21. 21.🏗️ What does a single fixed pulley mainly do? (a) changes pull direction (b) adds weight (c) makes it magnetic (d) halves the weight
22. 22.True or false: a small paper cup is needed for the thread-reel pulley. (a) True (b) False
23. 23.🧺 Which of these is needed for the thread-reel pulley? (a) a magnet (b) a battery cell (c) coins as the load (d) turmeric powder
24. 24.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) a balloon (b) an empty thread reel (c) string (d) a pencil
25. 25.True or false: a flagpole is an inclined plane. (a) False (b) True
26. 26.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: the same string is what we measure. (a) True (b) False
27. 27.True or false: a steering wheel is a wheel and axle. (a) False (b) True
28. 28.⚙️ Which of these is a wheel and axle? (a) a steering wheel (b) a sloping road (c) a see-saw (d) a bottle opener
29. 29.True or false: a battery cell is not needed for the thread-reel pulley. (a) True (b) False
30. 30.⚙️ Which of these is a lever? (a) a crowbar (b) a well pulley (c) a ramp (d) a doorknob
31. 31.🧺 Three of these are needed for the thread-reel pulley. Which one is NOT needed? (a) an empty thread reel (b) a pencil (c) a mirror (d) string
32. 32.⚖️ 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 string (b) how hard we must pull (c) the lifting height (d) number of pulleys
33. 33.⚙️ Which of these is a lever? (a) a slide (b) a tap handle (c) a steering wheel (d) a bottle opener
34. 34.⚙️ Which of these is a wheel and axle? (a) a crowbar (b) a spoon lifting a lid (c) a see-saw (d) a doorknob
35. 35.True or false: a bottle opener is a wheel and axle. (a) True (b) False
36. 36.⚙️ Which of these uses a pulley? (a) a sloping road (b) a slide (c) a crane (d) a bottle opener
37. 37.⚖️ Fair test — is lifting the cup easier with one pulley or with two? True or false: how hard we must pull is kept the same. (a) False (b) True
38. 38.True or false: a spoon lifting a lid is an inclined plane. (a) True (b) False
39. 39.⚖️ 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) False (b) True
40. 40.🏗️ Why is a pulley used to lift water from a deep well? (a) the bucket floats (b) pulling down is easier (c) water gets lighter (d) the rope gets shorter

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