is a vibration of the earth's surface that follows when rocks in the earth's crust move opposite sides of a fault, or break line. Fault lines occur in areas where the earth's crust is weak. When rocks breaks within the earth's crust, it releases energy in the form of shock waves, called seismic waves, which travel out from the hypocenter ( the source deep within the earth where the waves originate), to the epicenter ( the point on the earth's surface above the hypocenter and the site of the most violet shaking), in all directions. Scientists who study earthquakes are called seismologists, and they use a machine called a seismograph to detect earthquakes and to measure their magnitude.The Richter Scale is a mathematical formula that determine the magnitude of an earthquakenby measuring the amplitude of the seismic waves over a given period of time. It is useful in rating and comparing the sizes of different earthquakes. Earthquakes are also a very destructive natural process. In 1976, an measured 9.3 on the Richter Scale occurred under the Indian Ocean, off the northwestern coast of Indonesia. It triggered the devastating tsunami which flooded islands in western Indonesa, off southeren India, including Sri Lanka, and off eastern Africa, including the Seychelles and Madagascar. Inquiry is an interactive process that actively engages students in learning in meaningful ways. The process of inquiry is characterized by interactive, student-centered activities focused on questioning, exploring, and posing explanations. The goal of inquiry is to help students gain a better understanding of the world around them through active engagement in real-life experiences. The process of inquiry not only enhances students' understanding of natural phenomena, but also develops students' science process skills. It is a nonlinear variation of the scientific method. Composed of the same basic components, both the scientific method and the inquiry process require students to conduct research investigations by formulating a question, developing a hypothesis, conducting an experiment, recording data, analyzing data, and drawing conclusions. Drugs are chemicals that change the way your brain and body work. Drugs can be swallowed, inhaled, smoked, or injected. Whichever way you take drugs, they end up in your blood and go to all parts of your body. Alcohol can cause short-term and long-term damage to your body (brain, heart, stomach, liver, & reproductive system. Tobacco affect the body by the brain, mouth, heart, lungs, skin, & muscle. Animal many-celled organisms can't make their own food (mammal, birds, reptiles, fish, insects). Plant many-celled organisms make their food through photosythesis (flowering plants, trees, mosses, ferns). Fungi have no chlorophyll to make their own food (mold, mildews, rusts, yeasts, mushrooms). Protists mostly one-cell microrganisms including plant/animal like organisms (algae, amoebas, paramecia) has true nucleus. Monera microscopic one-celled organisms, no nucleus, absorb their food (bacteria & blue-green algae). animals without backbones & exoskelton protect soft inner bodies (worms, jellyfish, clams, snails, spiders, & bettles); with backbones different species (fish, amphibians, reptiles--cold-blooded temperature depend on surroundings--carnivore/herbivore, birds-- carnivore/herbivore, & mammals--warm-blooded temperature remains the same no matter surroundings; carnivores, herbivores, & omnivores).