Heat animate engines and global warming
12.06.2024
Heat animate engines and global warming
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For Prelims: What is Heat?, How Does Heat Animate Engines?, How Does Heat Cause Global Warming? |
Why in the news?
Understanding heat has changed metallurgy, materials science, mining, refineries, a large variety of chemical reactions, semiconductor electronics, meteorology, and transportation.
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 gasses, 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 gasses, exacerbating global warming.
Source: The Hindu
Ques :- Heat is a form of energy that is transferred from one body to another due to a:
A.Pressure difference
B.Temperature difference
C.Volume difference
D.Density difference
Answer B