As a result, the average amount of solar energy retained by Earth is 238 W/m2 (0.7 3 340 W/m2). Of the 70% of solar radiation that is retained within the climate system, about two-thirds is absorbed at Earth’s surface and about one-third by clouds and water vapor in the atmosphere (see Figure 2-3).
What is the average solar energy received by the Earth?
Globally, over the course of the year, the Earth system—land surfaces, oceans, and atmosphere—absorbs an average of about 240 watts of solar power per square meter (one watt is one joule of energy every second).
How much solar energy does the Earth receive per second?
When the curvature of the Earth and the density of the luminosity that hits our planet is considered, we receive only about 4.5 pounds per second of that energy.
What will happen if Earth does not radiate the heat it received?
Answer: If Earth does not radiate heat Then Earth will become very hot….
Does the sun make noise?
The surface of the Sun produces sound waves because the surface is convecting and this produces pressure waves that travel into the inner corona. But yes, the surface does produce sound waves, but they have very low wavelengths measures in hundreds of miles! …
Can sun power the world?
In a single hour, the amount of power from the sun that strikes the Earth is more than the entire world consumes in an year. To put that in numbers, from the US Department of Energy: Each hour 430 quintillion Joules of energy from the sun hits the Earth.
How many tw do humans need?
Per capita energy consumption today averages just 2.5 kW worldwide. Lifting all of humanity to the current US standard of living by 2100—an average of 9.5 kW per person, probably a conservative projection—thus means generating more than 51 TW of energy on top of everything we already produce today.
Is there enough solar energy to power the world?
How Much Solar Energy Does the World Currently Produce? There is currently about 500 GW of solar power currently up and running. That’s 2.76% of the total amount that we’d need to power the entire earth.
Are solar radiation harmful?
Solar radiation contains a considerable amount of ultraviolet radiation, of which especially the short wavelength part below 315 nm is considered to be harmful to life on earth.
What gases stop the heat from escaping?
Greenhouse gases in the atmosphere absorb heat energy and prevent it escaping into space.
There are many greenhouse gases but these are some of the most important:
- water vapour, H 2O.
- carbon dioxide, CO. …
- methane, CH 4
- nitrous oxide, N 2O.
- CFCs (chlorofluorocarbons)
What controls how much radiation the sun emits?
Q1: What controls how much radiation the Sun emits? Sunspots are not the primary control. The distance from the Sun to the Earth is approximately 150 million kilometers; at this distance, Earth intercepts a tiny amount of the radiation emitted by the Sun. The law that explains this is known as the Inverse Square Law.