a chemical reaction accompanied by the absorption of heat
The capacity for work or vigorous activity
An ecological pyramid illustrating the energy flow within an ecosystem.
The conversion of one form of energy into another, or the movement of energy from one place to another. Solar panels allow for energy transfer from light energy to heat and electrical energy.
a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system.
the surroundings or conditions in which a person, animal, or plant lives or operates.
an imaginary line drawn around the earth equally distant from both poles, dividing the earth into northern and southern hemispheres and constituting the parallel of latitude 0°.
a state in which opposing forces or influences are balanced.
the process of eroding or being eroded by wind, water, or other natural agents.
is the process of a substance in a liquid state changing to a gaseous state due to an increase in temperature and/or pressure. Evaporation is a fundamental part of the water cycle and is constantly occurring throughout nature.
An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.
a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.