Outer space's radiation shines on earth at night, so then why does the earth get cold at night?

Question

Ok, so I realize that outer space is not "nothingness." It is full of radiation with a temperature of about 3 K. Since this radiation is shining on the earth at night, why does the earth get cold at night?

Answer 1

Um... the temperature of the cosmic background radiation is 3 K. The temperature of liquid nitrogen is 77K. You figure it out.

Answer 2

Outer space is at ~2Kelvin which is almost absolute zero. Radiation energy goes as the temperature to the fourth power. So yes, the earth receives a small amount of radiation energy from outer space but it emits a *lot* more.

When its a cloudy night the earth doesn't lose as much energy because it's radiating to clouds instead of outer space. That's why deserts can get quite chilly at night -- there is no moisture in the atmosphere to "catch" the radiation and return it to the surface of the earth.

Answer 3

Despite the effect of radiation on earth's temperature, the earth gets cold at night due to the rotation of the earth itself. The sun plays a big part in heating up the earth with its rays and such. If you're on a set point on the earth and it's revolving, eventually, the point will be turned away from the sun, thus causing night and cooler temperatures, since the sun's rays aren't there to heat up the atmosphere for that point.

Answer 4

The part of the earth that is experiencing night is facing away from the sun. Because the earth has a dense atmosphere, oceans and such the temperature does not drop drastically like it does on the moon. Unlike the moon which has very little atmosphere or bodies of water to give off heat during the night. The atmosphere, and large bodies of water give off heat during the night to keep the earth warmer

Answer 5

It relies upon somewhat on what you mean through 'accomplishing earth'. in a unmarried experience, the reply is each conceivable wavelength, from low-frequency radio, through microwaves, infrared, seen, ultraviolet, x-ray and gamma ray. of route, the quantities of lots of those (somewhat ir seen and uv) are a lot below in the course of the day, yet they are nevertheless there. All stars emit those wavelengths, no longer only the sunlight. on the different hand, no longer all of those attain the earth's floor for the reason that some are absorbed through the ambience on the way through.

Answer 6

3 K is -270 degrees Celsius: by your logic, it's a wonder the Earth isn't much colder than it is. Earth's nighttime temperature isn't affected by cosmic radiation due to the Van Allen belts which shield the Earth from it. Solar radiation gets through because it's much, much more powerful.

Answer 7

The earth at night isn't hit by as many heat rays

Answer 8

it only gets colder on yhe part it not shining on but on yhe other side 12 HRS. away it is also most people don't realize that the sun is closer to Earth in the winter than it is in the summer.

Answer 9

Because the atmosphere insulates the earth and keeps the heat in.

Answer 10

In the daytime sun strikes dust in air,other objects,warms them.