Last Updated on September 24, 2022 by amin
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How much of the sun’s energy reaches Earth quizlet?
The sun’s engery traveles 148 million km to earthg in only 8 minuets. The sun’s energy reaches earth in the form of radiation. 99% of radiant energy from the sun consist of visible light and infrared radiation.
How does the energy produced by the sun travel to Earth quizlet?
The energy from the sun travels to Earth through electromagnetic waves. … Radiation is the direct transfer of energy by electromagnetic waves.
How much energy does the Earth produce?
Earth’s interior heat flux. The Earth is constantly emitting thermal energy (heat) from its interior and crust into the atmosphere and global oceans. Current estimates of the total heat flux from Earth’s interior are 44.2 ± 1.0 × 1012 W (Pollack et al.
Does the sun warm space?
The sun is a bolus of gas and fire measuring around 27 million degrees Fahrenheit at its core and 10 000 degrees at its surface. Meanwhile the cosmic background temperature—the temperature of space once you get far enough away to escape Earth’s balmy atmosphere—hovers at –455 F.
How much solar energy falls per square Metre on the surface of the Earth?
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 of the sun’s energy is reflected back out into space quizlet?
How much of the sun’s incoming energy is reflected back out to space? About one-third of the sun’s incoming energy is reflected back out to space.
How do you calculate the energy emitted by the earth?
In order to calculate the total amount of energy arriving at Earth we need to know how much area is being lit. We then multiply the area by the insolation (in units of energy flow per unit area) to find out the total amount of incoming energy.
How much energy does the Earth receive from the sun per 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.
What percentage of the solar energy initially reaching the Earth is reflected back into space?
Thus about 71 percent of the total incoming solar energy is absorbed by the Earth system. Of the 340 watts per square meter of solar energy that falls on the Earth 29% is reflected back into space primarily by clouds but also by other bright surfaces and the atmosphere itself.
2.5 | SOLUTIONS for OpenStax™ “College Physics”
Intercept calculation and direction of position line – Sun as a celestial body
What is the average albedo of Earth?
about about 0.30
Using satellite measurements accumulated since the late 1970s scientists estimate Earth’s average albedo is about about 0.30. The maps above show how the reflectivity of Earth—the amount of sunlight reflected back into space—changed between March 1 2000 and December 31 2011.Oct 20 2014See also What Symbol Indicates Directions On A Map?
Where does all the energy on Earth come from quizlet?
Almost all energy at Earth’s surface comes from the sun. The sun’s energy heats the planet and the air around it. This causes the atmosphere to move and create weather. Sunlight also powers photosynthesis and life on Earth.
What is the solar constant quizlet?
The solar constant is the amount of energy received at the top of the Earth’s atmosphere on a surface oriented perpendicular to the Sun’s rays (at the mean distance of the Earth from the Sun).
How much of the solar energy that reaches Earth’s atmosphere is either scattered or reflected?
1.3 Energy Incident at Earth’s Surface Of the roughly 56% of the incoming solar radiation making it through the atmosphere to Earth’s surface about 6% gets reflected by the surface and 50% is absorbed at the surface.
How much of the sun’s energy actually reaches the Earth?
All of the energy the sun releases does not reach Earth. One one-billionth of the Sun’s total energy output actually reaches the Earth. Of all the energy that does reach Earth slightly less than 34 percent is reflected back to space by clouds. The Earth itself reflects another 66 percent back to space.
The Sun’s Energy – Earth’s Heat Balance
What percentage of energy comes from the sun?
100% of the energy entering the earth’s atmosphere comes from the sun.
How much sunlight received at the top of the atmosphere actually reaches the ground quizlet?
On a clear day about 80% of incoming solar radiation passes through the atmosphere to reach the earth’s surface. On a cloudy day generally less than 50% of the incoming solar radiation will pass through the atmosphere and reach the earth’s surface.
How much of the energy striking the Earth is absorbed by the Earth’s surface?
About one-third of the sun’s incoming energy is reflected back out to space. About one-half of the energy striking Earth is absorbed by Earth’s surface.
What percentage of incoming solar radiation is absorbed by the Earth’s surface of land and oceans?
~50% of the incoming energy is absorbed by the earth’s surface i.e. the land and oceans. ~30% is directly reflected back to space by clouds the earth’s surface and different gases and particles in the atmosphere (the earth’s albedo is 0.3 on average).
What is the incoming solar energy intercepted by the earth called?
insolationThe energy received by the earth is known as incoming solar radiation which in short is termed as insolation. As the earth is a geoid resembling a sphere the sun’s rays fall obliquely at the top of the atmosphere and the earth intercepts a very small portion of the sun’s energy.
How does the average speed of air molecules relate to temperature?
Temperature is a measure of the average speed of all of the molecules in a substance (gas liquid or solid). The higher the air temperature the faster the air molecules move. The faster they move the more space is needed to move around.
How much energy is absorbed by the atmosphere?
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. The Earth radiates energy at wavelengths much longer than the Sun because it is colder.
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.
Does the Earth lose heat to space?
Balancing Act See also What Do You Learn In Geography? Instead the only way the Earth loses energy to space is by electromagnetic radiation. At typical planetary temperatures this energy being shed to space is in the infrared part of the electromagnetic spectrum.
What percentage of incoming solar radiation is reflected and scattered back to space?
30%Of the 100% of solar radiation arriving at the top of the atmosphere 30% is reflected back to space the earth’s surface emits an amount of longwave IR directly to space amounting to 6% and air (greenhouse gases in particular) and clouds emit a total of 36% and 28% (respectively) to space.
Is the Earth gaining energy?
In spite of the enormous transfers of energy into and from the Earth it maintains a relatively constant temperature because as a whole there is little net gain or loss: Earth emits via atmospheric and terrestrial radiation (shifted to longer electromagnetic wavelengths) to space about the same amount of energy as it … See also what are the basic beliefs of daoism
How much energy from sun reaches to Earth’s surface in Joules per second?
1. 7×1017 joule/second.
What happens when the sun’s energy reaches Earth?
Once the sun’s energy reaches earth it is intercepted first by the atmosphere. A small part of the sun’s energy is directly absorbed particularly by certain gases such as ozone and water vapor. Some of the sun’s energy is reflected back to space by clouds and the earth’s surface.
Energy from the Sun
Why does the albedo of the Earth and its atmosphere average about 30 percent?
The sun emits a maximum amount of radiation at wavelenghts near 0.5 um. … Average for an entire year the earth and itsatmospher (including its clouds) will redirect about 30% of the sun’s incoming radiation back to space which gives the earth and its atmosphere a combined albedo of 30%.
What is most of the energy that heats Earth’s atmosphere?
Most of the energy that reaches the Earth’s surface comes from the Sun (Figure below). About 44% of solar radiation is in the visible light wavelengths but the Sun also emits infrared ultraviolet and other wavelengths.
How does the average speed of air molecules relate to the air temperature quizlet?
How does the average speed of air molecules relate to the air temperature? – higher temperatures = faster average speeds of atoms and molecules. Energy in the process of being transferred from one object to another because of the temperature difference between them.
Why does only 47 of the sun’s energy reach Earth’s surface?
Only a part of solar radiation reaches the Earth’s surface: 34% of solar radiation is reflected into space by the atmosphere by clouds and by the Earth’s surface itself. Of the remaining 66% 19% is absorbed by water vapour by clouds and by the ozone layer and only 47% on average is absorbed by the Earth’s surface.
How much of the sun’s energy actually reaches the Earth quizlet?
About 19% of the energy available is absorbed by clouds gases (like ozone) and particles in the atmosphere. Of the remaining 55% of the solar energy passing through the Earth’s atmosphere 4% is reflected from the surface back to space. On average about 51% of the Sun’s radiation reaches the surface.
What is the average value of solar constant?
The approximate average value cited 1.3608 ± 0.0005 kW/m2 which is 81.65 kJ/m2 per minute is equivalent to approximately 1.951 calories per minute per square centimeter or 1.951 langleys per minute. Solar output is nearly but not quite constant.
What percentage of the energy from the sun intercepted by the Earth is absorbed?
71 percentThus about 71 percent of the total incoming solar energy is absorbed by the Earth system. Of the 340 watts per square meter of solar energy that falls on the Earth 29% is reflected back into space primarily by clouds but also by other bright surfaces and the atmosphere itself.