5. Discuss why wearing more layers of clothing during winter keeps uswarmer than wearing just one thick piece of clothing .

Wearing more layers of clothing during winter keeps us warmer than wearing just one thick piece of clothing due to several reasons:

1. Trapping Air: When you wear multiple layers, air gets trapped between these layers. Air is a poor conductor of heat, meaning it doesn't allow heat to pass through it easily. This trapped air thus acts as an insulator, keeping your body heat close to you instead of letting it escape into the cold environment.

2. Moisture Management: The base layer of clothing, which is closest to your skin, is usually made of moisture-wicking material. This means it draws sweat away from your skin and onto the fabric's surface, where it can evaporate. This helps keep you dry and reduces the risk of getting chilled.

3. Adjustability: Multiple layers allow you to adjust your clothing based on your activity level and the weather. If you start to overheat or if the weather warms up, you can simply remove a layer.

4. Protection: The outer layer is usually waterproof and wind-resistant, protecting you from snow, rain, and wind. This layer helps keep the inner layers dry and maintains their insulating properties.

In contrast, a single thick layer of clothing can only provide so much insulation and doesn't offer the same level of adjustability or protection from the elements. It may also cause you to sweat, which can make you feel colder when the sweat evaporates.