0
half the area of the earth (times...?) the area of the earth minus the area of the sun. 1/2 x 4/3 x pi x radius of earth squared) minus 4/3 x pi x radius of sun squared ---- I figured it a little differently... All the energy radiating from the Sun will pass through a sphere the size of the Earth's orbit, which, as we all learned in grammar school, is roughly 93 million miles. So, the area of that sphere is 4 times pi times 93 million squared, roughly 1017, or one hundred million billion square miles.
You could say the amount hitting the Earth is what hits a disc whose area is that of a circle the radius of the Earth; if the Earth's diameter is about 8000 miles, another factoid from grammar school, that makes the disc area about 50 million square miles.
The ratio of these areas gives the fraction of the Sun's radiation striking the Earth. Do the math, and you get 5x10-10 or about 5 ten-billionths!
On a hot summer's day, you can appreciate that we don't get all the Sun's radiant energy or else we'd need sunblock with SPF 250,000,000,000.
Wiki User
∙ 7y ago
Wiki User
∙ 15y agoThe surface temperature of the sun is approx. 5,500 °C Heating power: The solar constant on earth is 4000/3 watts/m^2. Given the sun is 150Gm away the heat given off at the sun is the solar constant times the area covered, 4pi r-squared, (4e3/3)x4pi (150e9)^2= 377 e24 watts. This is a lot of heating power.
Wiki User
∙ 14y agoYes, that's a pretty good approximate number to keep in mind as a comparison between the diameters of earth and sun. I get 108.97. Sun equatorial diameter: 1,390,000 km (863,705 miles) Earth equatorial diameter: 12,756 km (7,926 miles)
Wiki User
∙ 12y agoAs a percentage of the Sun's total output, the fraction that reaches Earth is incredibly small. However, of the energy that reaches Earth's atmosphere, an average of about reaches 18% reaches the surface (250 watts/meter of the 1366 watts/meter in the upper atmosphere, with a maximum of 1000 watts/meter where the sunlight hits perpendicularly).
Wiki User
∙ 16y agoIt doesn't generate heat, it's cooling off.
If you're talking about the greenhouse effect, that heat comes from the sun and it trapped here by certain elements in our atmosphere.
Wiki User
∙ 14y agoThe sun's temperature ranges from about 27 million degrees F near its inner core to about 11,000 degrees F at its surface.
Wiki User
∙ 15y agoTry this: http://www.sciencenetlinks.com/interactives/messenger/psc/PlanetSize.html
Wiki User
∙ 14y agoI read on Wikipedia that they can giv off as much as 6 x 1025 joules of energy. I pasted the link below: http://en.wikipedia.org/wiki/Solar_flares
Wiki User
∙ 13y agoEarth's equatorial diameter = 7,926 miles
Sun's equatorial diameter = 864,000 miles, roughly 109 times earth's diameter.
Wiki User
∙ 14y agoThe sun's radius is about 109 times the earth's radius.
Add your answer:
Earn +20 pts
Earth receive heat from sun is called.?
The process that Earth receives heat from the sun is called radiation.
Does the sun keep the earth warm?
The sun warms the earth. The heat (energy) from the earth then heats the air.
What is the celestial body of gas an emits light?
sun
How does the Sun warm up the Earth?
By shining on it. The Earth will absorb the heat and rays from the sun. ANSWER: to be more exact ultraviolet radiation from the sun is absorbed by earth in the form of heat uv rays are deadly to humans and most carbon based lifeforms but our ozone layer filters out most of the harmful radiation leaving us the heat
What is it called when the sun transfers heat to the earth?
The sun transfers heat to the Earth through radiation - solar radiation.
What does the sun give us here on Earth?
The sun gives energy, in the form of heat and light.
Is the sun hot enough to heat the earth and give light to the planets?
yes
What explains why sun is the only star fro which earth receives much heat and light?
the sun is much closer to earth than the other stars.
What process does the sun do to give heat to earth?
The energy of the sun is produced by the process of nuclear fusion, and a portion of this energy reaches the Earth in the form of sunlight, which heats the Earth.
What does sun give us?
The Sun is a huge star that is seen during the day on Earth. It gives the Earth many things, it give energy, vitamins, heat and helps things live.
How does heat travel from the sun to earth?
Heat from the sun transfers to Earth through radiation.
Will the sun always give off as much heat as it is now?
yes
How much of the sun heat will be reduced if all the water on earth on the sun?
0% because the sun is radiation and radiation can not be burnd
How does heat transfer in earth?
From the sun to the earth it is radiant heat
What 2 types of energy does the sun give to the earth?
Radioactive and solar energy (or light and heat).
Explain How you can feel heat from the sun even though the sun is millions of miles away in space?
The distance in between the Earth and the Sun is 93000000 miles. In space the temperature in the sun is 10 times that on Earth. The sun produces such incredible heat energy that it is able to reach Earth. The heat is much less here than it would be if we were closer to the sun. The sun creates its heat by burning the gasses that make it up.
Does the sun give heat to every planet?
Yes it does but the planets closer to the sun get more heat and the planets that are farther away get less heat. That is why Venus is hotter than our Earth and Mars is colder.
