*Question*
Q: Moving electrons have a form of kinetic energy called what? Read this paragraph and choose the correct option from the provided answers: Electrons are negatively charged particles in atoms. Moving electrons have a form of kinetic energy called electrical energy . If you've ever experienced an electric outage, then you know how hard it is to get by without electrical energy. Most of the electrical energy we use is produced by power plants and arrives in our homes through wires. Two other sources of electrical energy are pictured in Figure below . Choices: - potential energy - electromagnetism - deformed energy - electrical energy A:
**Answer**
electrical energy

*Question*
Q: What element is released into the atmosphere by the burning of fossil fuels? Read this paragraph and choose the correct option from the provided answers: water. Sulfur, critical to the 3D folding of proteins (as in disulfide binding), is released into the atmosphere by the burning of fossil fuels, such as coal. The cycling of these elements is interconnected. For example, the movement of water is critical for the leaching of nitrogen and phosphate into rivers, lakes, and oceans. Furthermore, the ocean itself is a major reservoir for carbon. Thus, mineral nutrients are cycled, either rapidly or slowly, through the entire biosphere, from one living organism to another, and between the biotic and abiotic world. Choices: - carbon - helium - oxygen - sulfur A:
**Answer**
sulfur

*Question*
Q: Land could not be colonized by other organisms until what became established? Read this paragraph and choose the correct option from the provided answers: All that changed when plants moved from water to land. This may have happened by 500 million years ago or even earlier. On land, everything was wide open. There were no other living things. Without plants, there was nothing for other organisms to eat. Land could not be colonized by other organisms until land plants became established. The earliest land plants may have resembled the modern liverworts in Figure below . Choices: - gases - carbon dioxide - oxygen - plants A:
**Answer**
plants

*Question*
Q: Where does most of the earth's energy come from? Read this paragraph and choose the correct option from the provided answers: Give an example of how matter cycles. While matter cycles round and round in the Earth System, ENERGY FLOWS through the Earth System. The vast majority of Earth's energy comes from the sun, flows into the Earth's System, and flows out of the Earth's System into space. If all the energy that comes to Earth from the sun were to stay on Earth, the Earth would melt away. But the energy that comes to Earth from the sun does not stay. Eventually it radiates back out to space as heat. We know this because the average temperature of the Earth has remained relatively constant. If the energy from the sun were to stay on Earth, the Earth's average temperature would rise. Some of the sun's energy is reflected by the atmosphere, some is absorbed by the Earth and re-radiated as heat, some evaporates water and powers the water cycle, some is captured by plants and used to make sugars, and some powers the wind but eventually ALL of the energy that comes to the Earth from the sun leaves the Earth and flows into space. For this reason we say that energy flows through the Earth System. Choices: - magnetic field - its core - its atmosphere - sun A:
**Answer**
sun