What Is Life Science? Is Life Science?

What is Science?What is Science? In ancient times science (from the Latin In ancient times science (from the Latin word word scientiascientia) meant knowledge or learning.) meant knowledge or learning.. Today we define science as . Today we define science as the study of the the study of the world around usworld around us. . Science helps us answer the how, what, Science helps us answer the how, what, where, and why of our surroundings. where, and why of our surroundings. But science is more than a collection of But science is more than a collection of facts. Science is a human work. It is a growing facts. Science is a human work. It is a growing and and an exciting search for what is truean exciting search for what is true. In this . In this sense, sense, science is a way of solving problemsscience is a way of solving problems..

What is Life?What is Life?Something is alive if it has all of the Something is alive if it has all of the

following following characteristics..Made up of one or more cellsMade up of one or more cells

Can sense and respond to changeCan sense and respond to change

Is able to reproduceIs able to reproduce

Has DNAHas DNA

Uses energy Uses energy

Grows and develops Grows and develops

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What life science is;What life science is;

Science has many branches, such as Science has many branches, such as physical science, earth science, and life physical science, earth science, and life science. science. Life science is the study of living Life science is the study of living things.things. It helps to explain how living things It helps to explain how living things relate to one another and to their relate to one another and to their surroundings.surroundings.Put yourself in the place of a life scientist. Put yourself in the place of a life scientist. Try to figure our the following press Try to figure our the following press releases. Can you explain these events?releases. Can you explain these events?

CHINA: DECEMBER, 1974 - Snakes CHINA: DECEMBER, 1974 - Snakes crawled from their winter sleeping places. crawled from their winter sleeping places. They froze to death in the winter cold. Rats They froze to death in the winter cold. Rats also behaved in a strange way. They came also behaved in a strange way. They came out of their hiding places and wandered out of their hiding places and wandered around the streets in broad daylight. These around the streets in broad daylight. These events were followed by an earthquake.events were followed by an earthquake.CHINA: FEBRUARY, 1975 - Geese were CHINA: FEBRUARY, 1975 - Geese were seen flying into trees. Dogs howled for no seen flying into trees. Dogs howled for no clear reason. These events were followed clear reason. These events were followed by an earthquake.by an earthquake.GREECE: 856 _ Mice, weasels,and other GREECE: 856 _ Mice, weasels,and other burrowing animals were seen fleeing from burrowing animals were seen fleeing from the ancient city of Helice. Five days later the ancient city of Helice. Five days later the city was leveled by an earth quake.the city was leveled by an earth quake.

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Earthquakes do affect living things. Earthquakes do affect living things. Because life scientists study the behavior Because life scientists study the behavior of living things they may be able to predict of living things they may be able to predict earthquakes. This is only one of the many earthquakes. This is only one of the many ways life science is used in the world. ways life science is used in the world.

Where you paying attention?Where you paying attention? What is science?What is science?

What are the 6 characteristics of all living What are the 6 characteristics of all living things? things?

What would scientists do if they found What would scientists do if they found something that had 5 of the 6 characteristics?something that had 5 of the 6 characteristics?

Explain.Explain.