Ash fall occurs when a volcano erupts, emitting a mixture of hot gases, ash, rock fragments, and other materials into the atmosphere. These materials can be carried by winds and spread over large areas, leading to the deposition of ash on the ground. Ash fall can have significant impacts on the environment, infrastructure, and human health.
Field Observations: Visit a volcanic site or study images and videos of recent eruptions to observe the characteristics of ash fall firsthand.
Health Impacts: Examine scientific reports and health advisories related to volcanic ash exposure, and identify measures for protecting respiratory health in ash-affected areas.
Community Preparedness: Identify community-based strategies for preparedness and response to ash fall events, including emergency planning and public awareness campaigns.
By delving into these key concepts and study guide activities, you can develop a comprehensive understanding of ash fall and its implications for the environment and society.
Energy - A. Energy is involved in all physical and chemical processes. It is conserved, and can be transformed from one form to another and into work. At the atomic and nuclear levels energy is not continuous but exists in discrete amounts. Energy and mass are related through Einstein's equation E=mc 2 . B. The properties of atomic nuclei are responsible for energy-related phenomena such as radioactivity, fission and fusion. C. Changes in entropy and energy that accompany chemical reactions influence reaction paths. Chemical reactions result in the release or absorption of energy. D. The theory of electromagnetism explains that electricity and magnetism are closely related. Electric charges are the source of electric fields. Moving charges generate magnetic fields. E. Waves are the propagation of a disturbance. They transport energy and momentum but do not transport matter.
Relate temperature to the average molecular kinetic energy.