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Energy

The Energy category covers the description, definition, and use of all types of energy. Questions of a general nature can be put in the general Energy category. Other sub-categories exist for Fossil fuels, Nuclear energy, and renewables such as Wind, Solar, Hydro, Tidal, and Wave power.

24,905 Questions

How much energy earth receive of total energy of sun?

The Earth receives about one billionth of the total energy output of the Sun. This energy drives Earth's weather systems, sustains life through photosynthesis, and powers the water cycle.

What is the main source of energy that powers most ecosystems on earth?

The sun

Added: This is definitely true. Sunlight affects all surface and shallow water ecosystems.

All though the sun provides us with a primary source of energy for almost all of earth's ecosystems, with proof of greenery from photosynthesis; this is not the case in such areas like the land of the Sahara desert and the Southwest climates of the USA. The lack of abundant water is another factor.

What energy is wasted well riding a bike?

The main energy wasted while riding a bike is in overcoming aerodynamic drag, rolling resistance, and inefficient pedaling technique. These factors can lead to energy losses in the form of heat and vibration. Improving bike efficiency, maintaining proper tire pressure, and focusing on a smooth and steady pedaling motion can help minimize energy wastage.

Why does a small increase in speed produce a large increase in kinetic energy?

Kinetic energy is proportional to the square of the velocity, so increasing speed even slightly results in a larger change in kinetic energy. This relationship means that a small increase in speed has a disproportionate impact on the kinetic energy of an object.

What are 3 examples of cell types with a high energy demand?

Neurons in the brain, cardiac muscle cells in the heart, and hepatocytes in the liver are examples of cell types with high energy demands. These cells require substantial amounts of energy to fuel their specialized functions such as generating action potentials, contracting to pump blood, and performing metabolic processes, respectively.

How geothermal energy are formed?

Geothermal energy is formed from the heat within the Earth's core, which warms up surrounding rock and water. This heat can be harnessed to generate electricity or for direct heat applications. Geothermal energy is renewable and sustainable, as the Earth's heat is continually produced through radioactive decay and leftover heat from the planet's formation.

What organism supplies matter and energy?

Plants, through the process of photosynthesis, supply matter and energy to most ecosystems by converting sunlight into chemical energy in the form of glucose. This energy is then transferred through the food chain as animals consume plants or other animals.

Is geothermal energy derived from burning organic material such as wood alcohol and garbage?

No, geothermal energy is derived from heat stored beneath the Earth's surface. It is produced by tapping into naturally occurring reservoirs of hot water and steam to generate electricity. Burning organic materials like wood, alcohol, and garbage is typically associated with biomass energy production.

How is the energy balance or energy budget in relation to the sun and earth?

The energy balance between the sun and Earth is maintained through a process called the Earth's energy budget, where energy from the sun is absorbed by the Earth's surface and then re-radiated back into space as heat. This balance is crucial for regulating Earth's climate and temperature. Any imbalance in this energy budget can lead to climate changes and global warming.

What is the primary source of energy in the biosphere?

The primary source of energy in the biosphere is the sun. Solar energy is captured by plants through photosynthesis, which is then transferred through the food chain as organisms consume each other. This process fuels all life on Earth.

What is an outside source of energy is required for?

An outside source of energy is required for systems that do not produce their own energy, such as electronic devices, vehicles, and buildings. This energy is needed to power the functioning of these systems and to perform the tasks they are designed for.

What pollutants are released from power stations?

The answer is depending on what fuel power plant use and their waste treatment system.

Coal fire would yield CO2, SOx, NOx, dust particulates and Slack. SOx can be treated using scrubber. Particulates and NOx can be prevent using correct Air-Fuel ratio and trapped out using scrubber.

Gas Fire would yield every pollution like Coal except in lower amount of SOx and without Slack.

Hydro power may not yield any pollutants at all.

Temperature can be considered a pollution if it cause ecological damage. Power plant may cause water pollution if they discharge hot water without pre-cool. Same amount of water and temperature may not be considered a pollutant if the river stream is large enough.

Where is potential energy the highest on a roller coaster?

The potential energy is highest at the top of the first hill or peak of the roller coaster because it is at its maximum height above the ground. As the roller coaster descends, potential energy is converted into kinetic energy as the car gains speed.

What are 2 advantages and 2 disadvantages for geothermal energy?

Advantages of geothermal energy include its renewable nature and low greenhouse gas emissions. However, disadvantages include high upfront costs for installation and the limited geographic availability of suitable sites for harnessing geothermal energy.

What are the three types of geothermal energy?

  1. Dry Steam Power Plant : generates power directly from the steam from inside the earth.
  2. Flash Steam Power Plant : Flash steam plants use waters at temperatures greater than 360F. As this hot water flows up, it is collected in a flash tank where drop in pressure causes the liquid to boil into steam. The steam is then used to run turbines which in turn generate power. The condensed steam is returned to the reservoir.
  3. Binary Steam Power Plant : This type of plant uses high temperature geothermal water to heat another liquid which has a lower boiling point than water.

Could stoves be used for geothermal energy?

No, stoves are not designed to harness geothermal energy. Geothermal energy is typically captured using specialized systems that tap into the heat stored within the Earth's crust through geothermal power plants or geothermal heat pumps. Stoves are designed for cooking or heating food using fuel like gas, electricity, or wood.

What heats the water in the deep underground reservoirs used for geothermal power?

The water in deep underground reservoirs used for geothermal power is heated by the Earth's internal heat. This heat is generated by the decay of radioactive elements and residual heat from the planet's formation. The water is heated to high temperatures before it is brought to the surface to generate electricity.

How is thermal energy transferred on Earth's surface?

Thermal energy is transferred on Earth's surface through three main processes: conduction (direct transfer through material contact), convection (transfer through fluid movement), and radiation (transfer through electromagnetic waves). These processes work together to distribute heat and regulate temperature across the surface of the Earth.

How do eukaryote obtain energy?

Eukaryotes obtain energy through the process of cellular respiration, where glucose is broken down to produce ATP molecules that cells use as energy. This process occurs within specialized organelles called mitochondria. Eukaryotes can also obtain energy through photosynthesis, a process carried out by plants and some algae, where light energy is converted into chemical energy in the form of glucose.

Does earth emit higher energy radiation that the sun?

No, the Sun emits higher energy radiation than the Earth. The Sun emits a wide range of energy, including high-energy ultraviolet, X-ray, and gamma-ray radiation, while the Earth's radiation is primarily in the form of infrared and visible light.

Where does all the energy of the earth originally come from?

Originally, all the energy on the Earth, in the universe, really, came from the "Big Bang".

Early giant stars that went supernova created all the various elements, which coalesced into the planets making up the early solar disc.

This material, by Accretion, formed into the planets around a large ball of hydrogen which later became the sun.

This accretion, known as a bombardment, imparted the energy of these impacts into frictional heat energy. A secondary "great catastrophe" which formed the moon imparted more heat to the Earth.

Radioisotopes impart a small amount of heat to the inner planet, but this is naturally decreasing as the elements break down into more stable elements.

The gravitational (tidal) pull of the moon, and to a lesser extent the sun, also imparts some frictional heat to the Earth.

The remaining energy on the Earth has been transmitted by heat radiation from the sun, which, for the last 4 billion years or so, has been shining on the Earth.

How does a amoeba obtain energy?

Amoebas obtain energy by engulfing food particles through a process called phagocytosis. Once the food particles are ingested, they are broken down and nutrients are absorbed into the cell to be used for energy production through cellular respiration.

What are the advantages geothermal energy has over wind energy?

Geothermal energy is reliable as it provides constant power, whereas wind energy can be intermittent depending on wind conditions. Geothermal power plants have a smaller footprint compared to wind farms. Geothermal energy has lower operating costs and can be more cost-effective in the long run.

What kind of energy is geothermal energy?

Geothermal energy is a renewable form of energy that comes from the heat stored beneath the Earth's surface. It is harnessed by drilling wells to access hot water and steam that can be used to generate electricity or for direct heating applications. Geothermal energy is considered a sustainable and environmentally friendly source of power.