Table of Contents
- 1 How much percentage of energy is absorbed from the Sun to Earth?
- 2 How much solar energy hits the Earth per second?
- 3 How much solar energy falls per square meter on the surface of the Earth in kw?
- 4 What would happen to the temperature of the Earth if the sun stopped shining?
- 5 How much solar energy falls per square Metre on the Earth surface in average?
How much percentage of energy is absorbed from the Sun to Earth?
The Earth absorbs most of the energy reaching its surface, a small fraction is reflected. In total approximately 70% of incoming radiation is absorbed by the atmosphere and the Earth’s surface while around 30% is reflected back to space and does not heat the surface.
How much solar energy hits the Earth per second?
The sun’s luminosity is about 3.8 x 1026 Joules a second. In terms of mass, you can think of the total energy output as about 4,000,000 tons every 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.
How much solar energy is received by the Earth per square meter?
At Earth’s average distance from the Sun (about 150 million kilometers), the average intensity of solar energy reaching the top of the atmosphere directly facing the Sun is about 1,360 watts per square meter, according to measurements made by the most recent NASA satellite missions.
How much solar energy hits the Earth daily?
If we average out over an entire 24 hour cycle the amount of solar radiation hitting the Earth’s surface (known as the solar irradiance) on a clear day at the equator on the equinox is approximately 340 W/m2.
How much solar energy falls per square meter on the surface of the Earth in kw?
Science tells us that every square meter of the earth’s surface, when exposed to direct sunlight, receives about 1000 watts (1 kilowatt) of energy from the sun’s light.
What would happen to the temperature of the Earth if the sun stopped shining?
A relatively simple calculation would show that the Earth’s surface temperature would drop by a factor of two about every two months if the Sun were shut off. The current mean temperature of the Earth’s surface is about 300 Kelvin (K). This means in two months the temperature would drop to 150K, and 75K in four months.
How much solar energy hits the Earth per square centimeter?
Earth receives about 1/2,000,000,000 of the Sun’s radiant energy production. The average amount of solar radiation reaching Earth’s orbit (top of the atmosphere) and falling on a flat surface perpendicular to the Sun’s rays at that distance is about 2 calories per square centimeter per minute.
How much solar energy falls per square Metre on the surface of the Earth?