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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

What are the disadvantages of having peat as an energy source?

Peat emits high levels of greenhouse gases when burned, contributing to climate change. Harvesting peat also disrupts fragile ecosystems, releasing stored carbon and impacting biodiversity. Additionally, peat extraction can result in land degradation and water pollution.

What general types of enzymes facilitate cell synthesis activities?

Enzymes involved in cell synthesis activities can include polymerases (e.g. DNA polymerase for DNA synthesis), ligases (e.g. DNA ligase for joining DNA fragments), and kinases (e.g. protein kinases for phosphorylation reactions). These enzymes are essential for processes such as DNA replication, protein synthesis, and cell signaling.

When a baseball player throws a baseball he transfers kinetic energy from his body to kinetic energy in the ball Where does the baseball player get his kinetic energy from?

The kinetic energy comes from potential energy, which he got from ATP energy, which is produced through food. Potential energy is converted to kinetic energy after the muscles contract and relax.

Sources:

School science

Why is earth an open system with respect to energy?

Earth is considered an open system with respect to energy because it receives energy from an external source, the Sun, in the form of solar radiation. This energy is essential for various processes on Earth, such as photosynthesis and weather patterns. Additionally, Earth releases energy into space in the form of infrared radiation, maintaining a balance in energy exchange with its surroundings.

Why is geothermal power a benefit?

Geothermal power is a benefit because it is a renewable energy source that produces minimal greenhouse gas emissions, helping to reduce reliance on fossil fuels and combat climate change. It also provides a consistent and reliable source of electricity, as geothermal resources are available 24/7 unlike solar or wind energy which depend on weather conditions. Additionally, geothermal power plants have a small physical footprint and can be built in areas where traditional energy sources may not be feasible.

What biological process provides most of organisn's thermal energy?

Metabolism is the biological process that provides most of an organism's thermal energy. As organisms break down nutrients through metabolic processes like cellular respiration, heat is released as a byproduct, which helps regulate body temperature.

How is energy source is use on earth?

Energy sources on Earth are mainly used for electricity generation, transportation, and heating/cooling. The primary sources include fossil fuels (coal, oil, natural gas), renewable sources (solar, wind, hydro, geothermal), and nuclear energy. The choice of energy sources depends on factors like availability, cost, environmental impact, and technology.

What resource does salt fall under?

Salt falls under the category of natural resources. It is a mineral that is obtained from the earth or sea and has various uses in cooking, food preservation, and manufacturing processes.

What are some disadvantages of biological energy?

Some disadvantages of biological energy include limited availability of feedstocks, competition with food production for land and resources, potential emissions of greenhouse gases during production and processing, and dependence on external factors such as weather conditions.

What is one source of energy for processes in earth's spheres?

The Sun is a primary source of energy for processes in Earth's spheres, providing heat and light that drive weather patterns, climate systems, and ecosystem functions.

How does most energy move through earths system?

Most of the energy from the sun that enters Earth's system is absorbed by the surface and then radiated back into the atmosphere as heat. This heat drives atmospheric circulation patterns, ocean currents, and weather systems, ultimately shaping Earth's climate.

What nonrenewable energy comes from the remains of dead organisms?

Fossil fuels, such as coal, oil, and natural gas, are nonrenewable energy sources that come from the remains of dead organisms that were buried and transformed over millions of years.

Is it hotter over a wet field or a dry field on a sunny day?

It is generally hotter over a dry field on a sunny day compared to a wet field. This is because water evaporates from the wet field, which absorbs some of the heat and cools the surroundings. In contrast, a dry field has less moisture to evaporate, leading to higher temperatures.

What are some problems associated with geothermal power?

Some problems associated with geothermal power include the potential for land subsidence or earthquakes due to underground reservoir depletion, the release of greenhouse gases and toxins during drilling and power plant operation, and the limited availability of suitable geothermal resources in certain regions. Additionally, high upfront costs and technical challenges in locating and developing geothermal reservoirs can be barriers to widespread adoption.

If 100J of energy are required to draw a bow what is the kinetic energy of the arrow at the moment of release?

At the moment of release, all the energy stored in the bow (100J) is converted to the kinetic energy of the arrow. So, the kinetic energy of the arrow at that moment is 100J.

Can a dynamo work by the heat of steam?

The dynamo exists in two types, or configurations. The first, the generator, delivers only Direct Current; while the second type, the alternator delivers just AC, or alternating current.

For the Dynamo to produce energy it must be turned. Water falling 1,000 feet down onto a turbines blades will spin the [attached] Generator. Steam has the same effect upon the blades of a turbine.

What is a energy converter called?

An energy converter is commonly referred to as a power converter or energy transformation device. It is used to convert one form of energy into another, such as converting electrical energy into mechanical energy or vice versa.

What are the two sources of energy in the earths system?

The two main sources of energy in the Earth's system are sunlight, which drives processes through solar radiation, and heat from the Earth's interior, which is generated through radioactive decay and drives plate tectonics, volcanism, and other geologic processes.

How does Monera get their food and energy?

Monera typically obtain their food and energy through processes such as photosynthesis, where they use sunlight to produce energy, or through chemosynthesis, where they use inorganic compounds to create energy. Some Monera species also engage in saprotrophic feeding by breaking down dead organic matter.

How does archaebacteria get their energy?

Archaebacteria obtain their energy through various metabolic processes, including chemosynthesis, where they obtain energy from sources such as hydrogen gas, sulfur, or iron. Some archaebacteria are also able to perform photosynthesis using different pigments than plants and algae.

How do you convert mega joule per kilogram to Btu per pound?

Two pieces of information are require to answer this question.

1BTU = 1055.05585J and 1kilogram = 2.2046226 pounds


Hence 1 BTU/pound = 1BTU/pound x 2.2046226pounds/kilogram x 1055.05585J/BTU

or 1BTU=2326.00J/kg
or 1BTU=2.326kJ/kg
or 1BTU=2.326x10-3MJ/kg


For example if u need to convert 10500 BTU,
10500BTU=10500BTU x 2.326x10-3MJ/kg
10500BTU=24.42MJ/kg


The trick to conversion calculations is to always makes sure the unwanted units are cancelled with the ones you do want.

What is an example of heat energy by convection?

An example of heat energy transfer by convection is boiling water in a pot. As the water is heated, the molecules near the heat source become less dense and rise, while cooler, denser molecules flow in to take their place. This creates a circulating flow of water that transfers heat throughout the pot.

What percentage of Earth's energy comes from the sun?

More than 99%. Even the energy from fossil fuels (coal, oil and natural gas) came originally from the sun. Goethermal energy (from heat under the ground) is the only non-solar energy on Earth.

What type of energy is stored in the bodies of organisms?

Thermal energy is stored inside any living organisms because of their body heat

What sector of society consumes the most energy?

The industrial sector typically consumes the most energy, followed by the transportation and residential sectors. Industries such as manufacturing, mining, and construction have high energy demands for their operations.