Notes and Study material for Exams
The greenhouse effect is a natural process that warms the Earth’s surface. When sunlight hits the Earth’s atmosphere, some of the energy is reflected back to space and the rest is absorbed and re-radiated by greenhouse gases. The absorbed energy warms the Earth’s atmosphere and surface. The greenhouse effect is essential to life on Earth. … Read more
Here is a list of subtopics on geothermal energy: Geothermal energy is a type of renewable energy that comes from the heat within the Earth. Geothermal power plants use this heat to generate electricity. Geothermal heat pumps can be used to heat and cool homes and businesses. Geothermal energy is a clean and sustainable source … Read more
Here is a list of subtopics on renewable energy: Solar energy is the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Wind energy is the use of wind to generate electricity. Wind turbines convert the kinetic energy in the wind into mechanical power, which is then … Read more
What is Geothermal Energy? Geothermal energy is heat from the Earth’s interior that can be used to generate electricity, heat homes and businesses, and provide hot water. The Earth’s core is very hot, about 6,000 degrees Fahrenheit (3,300 degrees Celsius). This heat comes from the decay of radioactive elements in the core. The heat travels … Read more
What is Renewable Energy? Renewable energy is energy that comes from natural sources or processes that are constantly replenished. These include sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy does not produce greenhouse gases or other pollutants, and it is becoming increasingly affordable as technology improves. Why is Renewable Energy Important? Renewable energy … Read more