**The Windmill**

A windmill is a great example of a non-living object that shows movement. It is a mechanical device that converts wind energy into rotational motion. Windmills have been used for centuries to grind grain, pump water, or generate electricity.

**How does a windmill work?**

1. *Blades*: A windmill has large blades that are designed to catch the wind. The shape and angle of the blades are carefully designed to maximize the amount of energy that can be extracted from the wind.

2. *Rotational motion*: When the wind blows, it pushes against the blades, causing them to rotate. The rotation of the blades is converted into rotational motion, which can be used to power various types of machinery.

3. *Gear system*: The rotational motion of the blades is transmitted to a gear system. The gears are responsible for increasing or decreasing the rotational speed of the windmill, depending on the desired application.

4. *Mechanical power*: The rotational motion of the windmill can be used to grind grain, pump water, or generate electricity. In the case of grinding grain, for example, the rotational motion is transferred to a grinding stone, which crushes the grain into flour.

**The Conveyor Belt**

Another non-living object that demonstrates movement is a conveyor belt. Conveyor belts are commonly used in industries such as manufacturing, mining, and logistics to transport materials or products from one place to another.

**How does a conveyor belt work?**

1. *Belt design*: A conveyor belt consists of a continuous loop of material that is stretched between two or more pulleys. The belt is usually made of rubber or another flexible material, which allows it to bend and conform to the shape of the pulleys.

2. *Rotational motion*: The pulleys are connected to a motor or another source of rotational motion. When the motor is activated, it causes the pulleys to rotate, which in turn moves the conveyor belt.

3. *Transportation of materials*: As the conveyor belt moves, it carries materials or products along its length. The materials can be placed directly on the belt or loaded onto it using other equipment, such as a conveyor chute or a mechanical arm.

4. *Control systems*: Conveyor belts are often equipped with control systems that allow operators to regulate the speed and direction of movement. This ensures that the materials or products are transported efficiently and safely.

In conclusion, windmills and conveyor belts are two examples of non-living objects that exhibit movement. Windmills convert wind energy into rotational motion, which can be used for various purposes such as grinding grain or generating electricity. Conveyor belts, on the other hand, transport materials or products from one location to another using a continuous loop of material and rotational motion. Both of these objects play important roles in different industries and have greatly contributed to human progress and development.