Search results
Results from the WOW.Com Content Network
The nebular hypothesis is the most widely accepted model in the field of cosmogony to explain the formation and evolution of the Solar System (as well as other planetary systems). It suggests the Solar System is formed from gas and dust orbiting the Sun which clumped up together to form the planets.
Community-based research is more likely to trigger public action and engagement with environmental issues than traditional research. [7] Bottom up community-based research in which community members oversee each phase of the research project is more likely to inspire structural reforms that are responsive to the needs of EJ communities. [6]
Pierre-Simon Laplace, one of the originators of the nebular hypothesis. Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar System", simply because it was not generally thought that the Solar System, in the sense we now understand it, existed.
Objects named nebulae belong to four major groups. Before their nature was understood, galaxies ("spiral nebulae") and star clusters too distant to be resolved as stars were also classified as nebulae, but no longer are. H II regions, large diffuse nebulae containing ionized hydrogen; Planetary nebulae; Supernova remnants (e.g., Crab Nebula ...
Natural experiments are employed as study designs when controlled experimentation is extremely difficult to implement or unethical, such as in several research areas addressed by epidemiology (like evaluating the health impact of varying degrees of exposure to ionizing radiation in people living near Hiroshima at the time of the atomic blast [3 ...
A scientific theory is an explanation of an aspect of the natural world and universe that can be or that has been repeatedly tested and has corroborating evidence in accordance with the scientific method, using accepted protocols of observation, measurement, and evaluation of results.
Based on the results of the survey, the most significant challenges identified by the sample of Ontario teachers include over-crowded curriculum, lack of resources, low priority of environmental education in schools, limited access to the outdoors, student apathy to environmental issues, and the controversial nature of sociopolitical action.
Early childhood education (ECE), also known as nursery education, is a branch of education theory that relates to the teaching of children (formally and informally) from birth up to the age of eight. [1] Traditionally, this is up to the equivalent of third grade. [2] ECE is described as an important period in child development.