PS-12-Key Terms Work and Machines worksheet - Free Printable

Let's solve this step by step. The worksheet is about key terms related to work and machines. We need to:

1. Unscramble the italicized words in the first 10 sentences.
2. Fill in the blanks in the "Drag and Drop" section using the given terms.

---

Part 1: Unscramble the Terms

We'll go through each sentence and unscramble the italicized word.

---

1. *The force applied by a machine to overcome another force is the stirnecesa force.*

- "stirnecesa" → Let's rearrange:
Try: resistance
Yes! "Resistance force" is the force that opposes motion (like friction or gravity).
✔ Answer: resistance

---

2. *The force that is applied to the machine is the ofref force.*

- "ofref" → Rearranging: effort
Effort force is the input force you apply to a machine.
✔ Answer: effort

---

3. *When a force is applied through a distance, krow is done.*

- "krow" → Rearranging: work
Work = Force × Distance
✔ Answer: work

---

4. *A device that makes work easier is a himcaen.*

- "himcaen" → Rearranging: machine
A machine helps do work more easily.
✔ Answer: machine

---

5. *The work done to a machine is iutnp work.*

- "iutnp" → Rearranging: input
Input work is the work you put into a machine.
✔ Answer: input

---

6. *A machine in which input work is equal to output work is an ilead machine.*

- "ilead" → Rearranging: ideal
An ideal machine has no friction, so input work = output work.
✔ Answer: ideal

---

7. *A device that does work with only one movement is a plimes machine.*

- "plimes" → Rearranging: simple
Simple machines are basic devices like levers, pulleys, etc.
✔ Answer: simple

---

8. *The number of times a machine multiplies the effort force is the leahincamc gavetadna.*

- "leahincamc gavetadna" → Two words:
First: "leahincamc" → mechanical
Second: "gavetadna" → advantage
So: mechanical advantage
✔ Answer: mechanical advantage

---

9. *The work done by a machine is the touupt work.*

- "touupt" → Rearranging: output
Output work is the work the machine does on something else.
✔ Answer: output

---

10. *A machine makes work easier by changing the size or direction of the ceorf exerted on an object.*

- "ceorf" → Rearranging: force
Machines change the size or direction of force.
✔ Answer: force

---

Part 2: Drag and Drop

Given terms:
- block and tackle
- screw
- inclined planes
- pulley
- wheel and axle

Now fill in:

11. An inclined plane wrapped around a cylindrical post is a ____________.

→ This describes a screw.
✔ Answer: screw

---

12. A doorknob is an example of a ____________.

→ A doorknob turns and rotates — it’s a wheel and axle.
✔ Answer: wheel and axle

---

13. A grooved wheel with a rope or a chain running along the groove is a ____________.

→ That’s a pulley.
✔ Answer: pulley

---

14. Screws and wedges are types of ____________.

→ Both screws and wedges are derived from inclined planes.
For example: a wedge is two inclined planes back-to-back; a screw is an inclined plane wrapped around a cylinder.
✔ Answer: inclined planes

---

15. A system of pulleys is called a ____________.

→ Multiple pulleys together form a block and tackle.
✔ Answer: block and tackle

---

Final Answers:

#### Unscrambled Terms:
1. resistance
2. effort
3. work
4. machine
5. input
6. ideal
7. simple
8. mechanical advantage
9. output
10. force

#### Drag and Drop:
11. screw
12. wheel and axle
13. pulley
14. inclined planes
15. block and tackle

✔ All answers are now complete and correct!