Why do we need the Sun? The sun is really important because it provides us with a lot of resources such as light ,heat ,energy , vitamin D ,helps grow our food and most importantly it helps keep us alive if it weren’t for the sun none of us would be here.
Why is sunlight the most important?
Nothing is more important to us on Earth than the Sun. Without the Sun’s heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas , stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.
Why is the sun such a powerful resource?
It radiates light and heat, or solar energy , which makes it possible for life to exist on Earth. Plants need sunlight to grow. Animals, including humans, need plants for food and the oxygen they produce.
Why is the sun the most important source of energy?
One of the most important sources of energy is the sun. ... We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells. The sun heats the earth’s surface and the Earth heats the air above it, causing wind.
Is sun a natural resource?
Any natural substance that humans use can be considered a natural resource. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water. Animals, birds, fish and plants are natural resources as well.
Can we live without sun?
Without the Sun’s rays, all photosynthesis on Earth would stop . ... While some inventive humans might be able to survive on a Sun-less Earth for several days, months, or even years, life without the Sun would eventually prove to be impossible to maintain on Earth.
What vitamin does the sun give us?
Our body creates vitamin D from direct sunlight on our skin when we’re outdoors. From about late March/early April to the end of September, most people should be able to get all the vitamin D we need from sunlight.
What is the hottest planet?
Venus is the hottest planet in the solar system. Although Venus is not the planet closest to the sun, its dense atmosphere traps heat in a runaway version of the greenhouse effect that warms Earth.
Which planet is closest to the sun?
Mercury is the planet closest to the sun. In 2004, NASA launched its MErcury Surface, Space ENvironment, GEochemistry, and Ranging mission, nicknamed MESSENGER.
What happens when the sun dies?
After the Sun exhausts the hydrogen in its core, it will balloon into a red giant , consuming Venus and Mercury. Earth will become a scorched, lifeless rock — stripped of its atmosphere, its oceans boiled off. ... While the Sun won’t become a red giant for another 5 billion years, a lot can happen in that time.
Why is Sun a renewable source of energy?
Solar energy is a renewable source of energy that is sustainable and totally inexhaustible, unlike fossil fuels that are finite. ... It is considered an environmentally friendly source of energy because it comes directly from the Sun ; it does not involve the burning of fossil fuels.
What is the largest source of energy for the Earth Class 9?
Solar Power . The Sun is Earth’s main source of energy, making the development of solar power a natural choice for an alternative energy source.
What will happen to life on earth if there is no sun?
With no sunlight, photosynthesis would stop , but that would only kill some of the plants—there are some larger trees that can survive for decades without it. Within a few days, however, the temperatures would begin to drop, and any humans left on the planet’s surface would die soon after.
What are 5 benefits of the Sun?
- The sun’s light kills bacteria. Surprisingly enough, sunlight does kill bacteria! ...
- Sunlight reduces your blood pressure. ...
- Sun exposure reduces cancer risk. ...
- The sun strengthens your bones. ...
- Sunlight improves your sleep quality.
How does the Sun affect us on Earth?
The Sun. ... The sun has extremely important influences on our planet: It drives weather, ocean currents, seasons, and climate , and makes plant life possible through photosynthesis. Without the sun’s heat and light, life on Earth would not exist.
Why does the Sun exist?
Formation. The Sun and the rest of the solar system formed from a giant , rotating cloud of gas and dust called a solar nebula about 4.5 billion years ago. As the nebula collapsed because of its overwhelming gravity, it spun faster and flattened into a disk. ... Like all stars, the Sun will someday run out of energy.
