2nd+Grade+Science

Plants
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 * Life Requirements - Plants have basic needs. Plants need air, water, and food. Plants also require light. Plants use food as a source of energy and as a source of building material for growth and repair.
 * Life Cycles - Plants have life cycles. Plants begin life and develop into adults, reproduce, and eventually die. The details of this life cycle are different for different organisms. (Example: the life cycle of familiar flowering plants includes the following stages: seed, plant, flower, and fruit.)
 * Observable Characteristics - Plants share many, but not all, characteristics of their parents. For example, characteristics of plants such as leaf shape, flower type, color, size are passed on from parents to young

Who Is Responsible for Our Land?
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 * Surface Changes - The surface of Earth changes. Some changes are due to slow processes, such as erosion and weathering, and some changes are due to rapid processes, such as landslides, volcanic eruptions, and earthquakes. Landforms include mountains, plains, plateaus, valleys, hills. (Taught in Social Studies)
 * Water - Water is a natural resource and is found under the ground, on the surface of the Earth, and in the sky. It exists in three states (liquid, solid, gas) and can go back and forth from one form to another. People use water sources (wells, springs, lakes, rivers, oceans) in a variety of ways. (drinking, cleaning, food preparation)
 * Water Movement - Water moves in predictable patterns.

Properties of Matter
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 * States of Matter - Matter exists in several different states: solids, liquids and gases. Each state of matter has unique physical properties. Gases are easily compressed but liquids and solids do not compress easily. Solids have their own particular shapes, but liquids and gases take the shape of the container.
 * Material Composition - Some objects are composed of a single substance, while other objects are composed of more than one substance.

Sun, Moon, Earth
> • Patterns of Objects in the Sky - Common objects in the sky have predictable patterns of movement (day, night, month, season, year).
 * 1) • Characteristics of Objects in the Sky - Common objects in the sky (sun, moon) have observable characteristics. (Examples of characteristics of the sun, moon and Earth, include relative distances and abilities to support life.)