What is Heat?
- Heat is a form of energy that is transferred from one body to another due to a temperature difference.
- It can be transferred through three modes: conduction, convection and radiation.
How Does Heat Animate Engines?
- Internal Combustion Engines: Heat from combustion of fuel in the engine cylinders is converted into mechanical energy, which powers the vehicle.
- Heat exchangers: Heat is transferred from the engine to the cooling system, which helps maintain the engine's optimal operating temperature.
How Does Heat Cause Global Warming?
- Greenhouse effect: Heat from the sun is trapped in the Earth's atmosphere by greenhouse gases, leading to an increase in global temperatures.
- Human activities: Human activities such as burning fossil fuels and deforestation release large amounts of carbon dioxide and other greenhouse gases, exacerbating global warming.
