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Planet Earth
Earth is the planet where we live. It is the third planet from the Sun and is currently the only known planet in the Universe that is able to support life.
2,824 Questions
How does the Earth lose energy?
Planets have some heat.
The Earth and other planets retain some residual heat left from the time planets and the Sun were formed four or five billion years ago. In addition, there are some internal sources of heat such as radioactive decay. Earth and other planets also gain heat from the Sun.
Planets lose heat.
Overwhelmingly, the mechanism for heat loss is through radiation of heat. All objects radiate heat in the form of electromagnetic radiation. (One can look up "black body radiation" which is an interesting topic in its own.) For Earth, this is typically characterized as infra-red radiation. The radiation is emitted from the Earth, through the atmosphere and heads out into cold space.
(Space, all the apparent emptiness we see in the night sky, is at a temperature of about 4 degrees Celsius above absolute zero, compared to our temperature of almost 300 degrees above absolute zero. The cooling through radiation of the hot Earth is evident in our daily lives because the cooling we experience at night can be so dramatic. In particular, clouds prevent much infrared radiation from directly escaping. A cloudy night cools several degrees less than a clear night.)
There are complications.
Though there is no question that the Earth loses heat by radiating it into space, the details get complex. There are a lot of complications about how much energy of this sort is absorbed by the atmosphere and that leads to discussions of the Greenhouse Effect, but that can be left to another question. The greenhouse effect is quite real and part of the complex balance of energy incoming and energy radiated that can occupy a long discussion.
Is our movement relative to the earth's movement?
Yes and no.
It depends who you believe. In some sense, your movement is relative to the earth's movement because if the earth is rotating this way --> and you are walking this way <-- then your speed is slowed down, because the Earth is moving you away. According to this, that means you are also never at rest.
If you want no, then you are at rest completely. In this sense, you are at rest because you are not expending any energy. Which means you are at rest, you staying completely still, and no force is acting upon you, or you are not expending energy? You decide, but scientists think it is when no force is acting upon you.
Why does life exists on earth and not on any other planets?
We don't know for sure that some form of life doesn't exist on the other planets in our solar system. But Earth, for sure, has been an ideal place for life as we know it to exist. Moderate temperature ranges, plenty of liquid water, magnetosphere protection from the solar winds, properly balanced protective atmosphere--all contributing factors to life creation and sustenance.
The lack of atmosphere and water on other planets, along with surface temperatures that are either extremely below zero or exceedingly hot, means that life (as we know it) cannot survive.
One reason NASA has concentrated on finding out if there are ice crystals on planets is so the researchers can determine if water existed--at one time--on other planets. Just like our water can hold one-cell organisms, scientists hope to find one-cell organisms or remnants of life in the frozen ice on other planets. While there have been some hopeful results, none has concluded that any life ever existed on the planets NASA has investigated.
That we know of ...
Liquid water.
How many nukes would it take to blow up the world?
It is impossible to blow up the world with nuclear weapons. The detonation of all nuclear weapons on Earth would not have enough energy to physically destroy the planet. However, the global consequences would be catastrophic, leading to nuclear winter, widespread destruction, and loss of life.
Yes, Earth is a rocky planet primarily made up of silicate rocks and metals. The rocky outer layer, called the crust, is composed of various minerals and elements like silicon, oxygen, aluminum, and iron. This solid surface provides a foundation for continents, mountains, and ocean basins.
The Earth is about 4.5 billion years old and has had an atmosphere since it formed, but about 3.8-4.1 billion years ago there was believed to be the Late Heavy Bombardment, where a planetesimal roughly the size of Mars hit the Earth, breaking off a large chunk that formed into the Moon. This impact would have obliterated the atmosphere, but it has reformed naturally since then.
So, the answer to your question is approximately 4 billion years old.
How much more gravitational pull on Mars than on Earth?
There is less gravity on mars, it has only 37.6% of earths gravity.
If you weigh 100lbs on Earth, you would weigh 37.7lbs on Mars.
Mars is smaller than Earth so the effect that gravity has on anything there is lower than it is on Earth
Earth's circumference is 24,901.55 miles
mass of 5.9736 × 1024 kg
Volume of 108.321 × 1010km3
diameter at the poles is 7,899.80 miles
diameter at the equator 7,926.28 miles
hope I answered your question :)
The Earth without atmosphere would alternate between boiling and freezing (day and night). It would be bombarded with dangerous levels of UV radiation. Meteorites would rain down from the sky without burning up on a daily basis.
The Clock of eras is a graphic aid to help us visualize geologic time. It uses the analogy of a circular clock to represent the development of our planet in geologic time. One can see at a glance the relative time lengths of each major geologic era. The Clock represents geologic time on the Earth since its birth to the present, from the initial events that brought about the formation up to now. Each hour represents approximately 375 million years
How many people live in developing countries?
Approximately 80% of the global population lives in developing countries, which is around 6 billion people. These countries are characterized by lower income levels, limited access to healthcare and education, and often face challenges related to poverty and inequality.
Turkey is a country that spans both Europe and Asia, however, the majority of Turkey lies in Asia.
Where does Earth get its energy from?
Earth gets its energy primarily from the sun in the form of solar radiation. This energy is essential for driving weather systems, powering photosynthesis in plants, and sustaining life on the planet. Additionally, Earth's internal heat, from its core, contributes to processes like plate tectonics and volcanic activity.
How many 7 year olds are there in the world?
It is difficult to provide an exact number as population statistics are constantly changing. As of the latest estimates, there are approximately 1.2 billion 7 year olds in the world.
Why can't we go to the middle of the earth?
It's impossible to reach the middle of the Earth due to extremely high temperatures and pressures that would be fatal to any living being. Additionally, the Earth's core is mostly made of solid iron and nickel, which would make it physically impossible to penetrate with current technology.
How many miles thick is the earths inner core?
The core of the Earth, about 4,216 kilometers across and 2635 miles, is thought to be divided into an outer core of liquid iron and a nearly solid iron inner core about 1,500 miles in diameter.
How far is the Leo constellation from earth?
but have no connection with each other. They all happen to be in roughly the
same direction from us, but they're all at different distances. So there's no
such thing as a constellation's distance from us.
What happens to an object in free fall near Earth's surface?
If air resistance can be neglected, the object will fall faster and faster.
If air resistance is significant, the object will fall faster and faster, until it asymtotically approaches a "terminal velocity" - the velocity at which the downward pull of gravity is in equilibrium with the air resistance.
The thin layer of air that surrounds Earth is called?
The thin layer of air that surrounds Earth is called the atmosphere. It is composed of various gases, predominantly nitrogen and oxygen, and plays a crucial role in regulating Earth's climate and supporting life.
What is the continet of Austraillia?
First of all to correct your spelling. of 'What is the continet of Austraillia?'
It should read 'What is the continent of Australia?'
The word 'Australia' comes from Latin and means 'South/Southern'.
Casually Australia is both an continent and a nation.
As continent it is a tectonic plate which has detached from Antarctica and is moving North/North Eastwards, into the Eastern part of Indonesia. The mountains in Papua New Guinea (PNG) are the northern plate boundary. They are being 'pushed up' as a result of the Australian plate moving north into the Indonesian plates.
As a nation it's formal title is 'The Commonwealth of Australia'. The capital city is 'Canberra' ; NEITHER Sydney nor Melbourne. It is a western style constitutional monarchy. King Charles(III) of the UK is the Head of State. There are some 20 million people in the country. The nation is divided into states and territories. viz. Australian Capital Territory(ACT), New South Wales, Victoria, Queensland, South Australia, Western Australia , and Tasmania. The principle territory is the Northern Territory (North Australia), also Norfolk Island , and Nauru. .
What are Earth's and Neptune's rates of rotation?
One revolution in 23 hours 56 minutes, or 3.988888 degrees per minute.
What is the planet earth rotation period?
the periods of the earth are formal references containg valuable confirmation on some reasonable aspects of the earth. that make the times of the earth not answerable. the way that the aspects contain informal reasoning make it offerable to seek the formatic investment on what the earth is formally about. there is no referable information on when the earth was started and when it was created just that it had valuable confirmation on whether what you are asking is true or not if it has valuable and reasonable information on earth and its aspects in date and timelines. it can contain many things on confirmating what you would seek to find on thise website. i also may not have valuable confirmation on whether you can determine what you are trying to find with your conceidedable information.
Earth's orbital velocity is slowest on July 5 because?
On that date Earth is farthest away from the Sun.
Is Venus larger or smaller than Earth?
Venus' radius (and diameter) is about 95% the size of the Earth's. But because they
look so alike in shape and structure for many decades people believed that Venus's
environment was like Earth's.
You can help earth in many diffrent ways. You can help it by:- getting solar pannels fitted into your house, Getting double glazing and turning of electrical devices at the wall ( not on stand by)
