Simple Machines Worksheet with Diagrams and Questions

Let's solve this step-by-step based on the image you've provided. This is a worksheet about simple machines, and it includes diagrams, identification tasks, and fill-in-the-blank questions.

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Part A: Identify the Simple Machines in the Diagrams

We have six labeled diagrams (A–F). Match each to the correct simple machine from the list:

Simple Machines List:
- Lever
- Pulley
- Wheel and axle
- Inclined plane
- Wedge
- Screw

Now let’s analyze each diagram:

#### A.
- Shows a foot pressing down on one end of a bar that pivots on a fulcrum, lifting a small object.
- This is a lever — a rigid bar that rotates around a fixed point (fulcrum).
✔ Answer: Lever

#### B.
- A person pushing a box up a ramp.
- The ramp is a slanted surface used to move objects upward with less force.
✔ Answer: Inclined Plane

#### C.
- A rope going over a wheel with a flag being raised.
- This is a pulley — a wheel with a groove for a rope, used to lift loads.
✔ Answer: Pulley

#### D.
- A person riding a bike. The bike has a large wheel connected to a smaller shaft (crank and gear system).
- This represents a wheel and axle — two circular objects attached together, where turning the wheel turns the axle.
✔ Answer: Wheel and Axle

#### E.
- A person using an axe to split wood. The axe blade is cutting into the log.
- The axe blade is a wedge — a device with a sharp edge that splits materials apart.
✔ Answer: Wedge

#### F.
- A screw being turned into a board. Also shows a spiral shape.
- This is a screw, which is essentially an inclined plane wrapped around a cylinder.
✔ Answer: Screw

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Answers for Part A:

- A. Lever
- B. Inclined Plane
- C. Pulley
- D. Wheel and Axle
- E. Wedge
- F. Screw

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Question 3: Identify the following simple machines

a. sloping surface → Inclined Plane
b. rope over a wheel → Pulley
c. bar pivoting on a fixed point → Lever
d. spiral inclined plane → Screw
e. wheel connected to a shaft → Wheel and Axle
f. slope tapering to a sharp edge → Wedge

✔ Answers:
- a. Inclined Plane
- b. Pulley
- c. Lever
- d. Screw
- e. Wheel and Axle
- f. Wedge

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Question 4: Name the simple machine used to do the following

a. chop wood → Use an axe → Wedge
b. load railroad cars → Use a ramp → Inclined Plane
c. remove tacks → Use a claw hammer (the claw acts as a lever) → Lever
d. fasten pieces of wood → Use screws or nails → Screw
e. reduce friction on rolling objects → Wheels → Wheel and Axle
f. raise and lower a sail → Pulley system → Pulley

✔ Answers:
- a. Wedge
- b. Inclined Plane
- c. Lever
- d. Screw
- e. Wheel and Axle
- f. Pulley

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Question 5: Fill in the blanks

Drag and Drop: effort, energy, simple

a. A machine can never do more work than the amount of energy put into it.
→ Energy is conserved; machines cannot create energy.

b. No matter how complex machines seem, they are all forms of six simple machines.
→ All complex machines are combinations of the six basic types.

c. Simple machines help us make better use of our effort.
→ They allow us to apply less force over a longer distance.

✔ Answers:
- a. energy
- b. simple
- c. effort

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✔ Final Answers Summary:

#### Diagram Matching (A–F):
- A. Lever
- B. Inclined Plane
- C. Pulley
- D. Wheel and Axle
- E. Wedge
- F. Screw

#### Question 3:
a. Inclined Plane
b. Pulley
c. Lever
d. Screw
e. Wheel and Axle
f. Wedge

#### Question 4:
a. Wedge
b. Inclined Plane
c. Lever
d. Screw
e. Wheel and Axle
f. Pulley

#### Question 5:
a. energy
b. simple
c. effort

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