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The Sun (2007)
Part 4:
How would be life on earth without sun?
In short DARK! Along with light comes heat. So very cold as well. Most of the activity and life on earth are due to the energy from the Sun. Without light, photosynthesis will not take place.
Most plants cannot grow. Every other living thing would be without food. Almost nothing would survive if light were removed.
No Sun would mean not heat or any other radiated energy sufficient to creat the movement of air and water as we know it.
The Earth would be frozen and likely not to have an atmosphere.
Without the Sun, the Earth would have not gravitational pull to a central star... so would be in a totally different motion and relationship to the rest of the universe.
Life on Earth without the sun would not exist.
Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. Our Sun is actually the closest star to Earth. The Sun is a massive shining sphere of hot gas. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate. Discover more about the sun and its place in our solar system.1. The sun is by far the largest object in the solar system.
The sun is the center of our solar system. Without the sun, there would be no life on Earth because it would be cold and dark. The sun was formed by gas almost 5 billion years ago. Why does the earth revolve around the sun? This question was unanswered until Sir Isaac Newton discovered that the sun’s strong gravity pulled the planets to revolve around it.
Why we need the sun
The sun is not just a star that provides Earth with heat and light. The sun also gives us many other things we need to live. Energy is one example. The sun is the main source of energy on earth and energy produces a lot of things that we use today. Our electricity is generated by burning fossil fuels; coal, oil, and natural gas. These all come from sunlight. Our electricity comes from fossil fuels, which come from the sun because creatures that lived a long time ago needed the sun to live and when they died they were buried. Over the millions of years that passed the creatures turned into fossil fuels, which are the coal, oil, and natural gas, we use today. Even windmills and hydropower plants get their energy from the sun. Windmills move because the sun causes winds to blow. First, the sun’s rays in the form of radiation hit the surface of Earth. The warm ground heats the air above. Warm air at the equator moves north and south to the cooler regions at the poles, creating winds.
Hydropower plants generate energy because the sun causes rivers to flow. The sun causes rivers to flow because the sun creates warm air that gets trapped into some parts of the earth’s atmosphere. Then the warm air heats up the water in the river. Then the part of the river that is not warm hits the warm water and since warm water rises because it is less dense than cold water that creates a circulation that creates winds.
http://www.youtube.com/watch?v=avwu3V-MDHo&playnext_from=TL&videos=RbjluHBhjPs&feature=grec
Most plants cannot grow. Every other living thing would be without food. Almost nothing would survive if light were removed.
No Sun would mean not heat or any other radiated energy sufficient to creat the movement of air and water as we know it.
The Earth would be frozen and likely not to have an atmosphere.
Without the Sun, the Earth would have not gravitational pull to a central star... so would be in a totally different motion and relationship to the rest of the universe.
Life on Earth without the sun would not exist.
Our Sun has inspired mythology in almost all cultures, including ancient Egyptians, Aztecs, Native Americans, and Chinese. Our Sun is actually the closest star to Earth. The Sun is a massive shining sphere of hot gas. The connection and interaction between the Sun and the Earth drive the seasons, currents in the ocean, weather, and climate. Discover more about the sun and its place in our solar system.1. The sun is by far the largest object in the solar system.
The sun is the center of our solar system. Without the sun, there would be no life on Earth because it would be cold and dark. The sun was formed by gas almost 5 billion years ago. Why does the earth revolve around the sun? This question was unanswered until Sir Isaac Newton discovered that the sun’s strong gravity pulled the planets to revolve around it.
Why we need the sun
The sun is not just a star that provides Earth with heat and light. The sun also gives us many other things we need to live. Energy is one example. The sun is the main source of energy on earth and energy produces a lot of things that we use today. Our electricity is generated by burning fossil fuels; coal, oil, and natural gas. These all come from sunlight. Our electricity comes from fossil fuels, which come from the sun because creatures that lived a long time ago needed the sun to live and when they died they were buried. Over the millions of years that passed the creatures turned into fossil fuels, which are the coal, oil, and natural gas, we use today. Even windmills and hydropower plants get their energy from the sun. Windmills move because the sun causes winds to blow. First, the sun’s rays in the form of radiation hit the surface of Earth. The warm ground heats the air above. Warm air at the equator moves north and south to the cooler regions at the poles, creating winds.
Hydropower plants generate energy because the sun causes rivers to flow. The sun causes rivers to flow because the sun creates warm air that gets trapped into some parts of the earth’s atmosphere. Then the warm air heats up the water in the river. Then the part of the river that is not warm hits the warm water and since warm water rises because it is less dense than cold water that creates a circulation that creates winds.
http://www.youtube.com/wat
