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Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
Ecosystems
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Ecosystems

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  • 1. ECOSYSTEMS Science Unit B Chapter 1
  • 2. A system is a group of parts that work together as a unit. <ul><li>OPEN SYSTEMS </li></ul><ul><li>Most systems are open systems. They take in things from outside the system. For example, a terrarium takes in energy from the sun. </li></ul><ul><li>Why do plants need the sun’s energy? </li></ul><ul><li>CLOSED SYSTEMS </li></ul><ul><li>Very few systems are truly closed. Most systems receive inputs and give off outputs. </li></ul><ul><li>A diver in a submarine is in an almost completely closed system. </li></ul>
  • 3. Explain if these systems are open or closed. <ul><li>An aquarium </li></ul><ul><li>a forest </li></ul><ul><li>a sports team </li></ul><ul><li>your family </li></ul><ul><li>an astronaunt on the Space Shuttle </li></ul><ul><li>an automobile </li></ul>
  • 4. Stability <ul><li>Stability comes from the word stable. The suffix “ity” forms nouns from adjectives and means “the condition or quality of”. </li></ul><ul><li>Stability in systems means that over time the changes in a system cancel each other out. For example if something is added, it is later taken out. </li></ul><ul><li>The system must remain in balance. </li></ul><ul><li>How does the grass in your yard remain stable? </li></ul>
  • 5. Predict how this tool would help keep your yard stable. <ul><li>What are the inputs in a yard system? </li></ul><ul><li>What are the outputs in a yard system? </li></ul><ul><li>A system that is in balance is said to have what? </li></ul>
  • 6. Ecosystems <ul><li>Groups of living things and the environment they live in make up an ecosystem. </li></ul><ul><li>Some ecosystems include forests, ponds, and streams. </li></ul><ul><li>Explain how some organisms can live in different ecosystems. </li></ul>
  • 7. TYPES OF ECOSYSTEMS <ul><li>POPULATIONS </li></ul><ul><li>A group of the same species living in the same place at the same time is a population. </li></ul><ul><li>Populations live in environments to which they are adapted. </li></ul><ul><li>COMMUNITIES </li></ul><ul><li>A community of an ecosystem is made up of all the populations that live in the same area. </li></ul><ul><li>The plants and animals that live together depend on each other to survive. </li></ul>
  • 8. ACTIVITY <ul><li>Organize charts that compare how your needs are met in your community to how plants’ and animals’ needs are met in their community. </li></ul>
  • 9. ANALYZE THIS! <ul><li>Sometimes plants and animals are introduced into ecosystems that are not native to the ecosystem. </li></ul><ul><li>Can you name a plant or animal that lives in an ecosystem that you are familiar with and is not native to that ecosystem? </li></ul><ul><li>Predict what might happen if an animal from the jungle were introduced into a forest ecosystem. </li></ul>
  • 10. NONLIVING PARTS OF AN ECOSYSTEM <ul><li>SUNLIGHT </li></ul><ul><li>AIR </li></ul><ul><li>TEMPERATURE </li></ul><ul><li>SOIL </li></ul><ul><li>WATER </li></ul>
  • 11. LIVING THINGS IN ECOSYSTEMS <ul><li>HABITATS </li></ul><ul><li>The environment that meets the needs of an organism is called a habitat. </li></ul><ul><li>Read the book “A House is a House for Me” and discuss the different habitats listed. </li></ul><ul><li>NICHES </li></ul><ul><li>A niche is an organism’s role or job in the environment. </li></ul><ul><li>Name an organism from the forest environment and describe its niche in that environment. </li></ul>
  • 12. LIVING THINGS
  • 13. SUMMARY <ul><li>An environment that meets the needs of an organism is called a habitat. </li></ul><ul><li>An organism’s niche is its role within that habitat. </li></ul><ul><li>As organisms carry out their roles, they can affect both living and nonliving parts of that ecosystem. </li></ul>

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