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Protecting Ecosystems
Protecting Ecosystems
22
Social Studies
4th Grade
10/11/2011

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Cards

Term
--- is the careful management and wise use of natural resources.
Definition
Conservation
Term
--- means that something is made into something new or different.
Definition
Recycling
Term
Give 3 examples of materials that can be recycled.
Definition
glass, paper, aluminum
Term
Why is recycling aluminum a wise thing to do?
Definition
Melting aluminum for recycling takes much less electricity than having to get the raw material to make new aluminum.
Term
Why is recycling glass better than making new glass?
Definition
Glass is easily recycled because recycled glass melts at at lower temperature which takes less energy.
Term
What are the four main ways to conserve resources?
Definition

recycling

reducing

redesigning

reusing

Term
--- is the process of using less.
Definition
Reducing
Term
--- is the process of using something again.
Definition
Reusing
Term
--- is the process of changing the packaging or the material of a product so that it takes fewer resources to make.  It is also the making of something in a new way to use less material.
Definition
Redesigning
Term
--- is the protecting of an area of land or water.
Definition
Preservation
Term
A --- --- is an area designed to preserve the ecosystem and the natural beauty of an area.
Definition
national park
Term
--- is the repair of some damage done to an ecosystem. 
Definition
Reclamation
Term
Give an example of reclamation.
Definition
After mining is done the land area is reclaimed by putting the dirt back in the ground and replanting plants and trees.
Term
--- is the process that gradually changes an existing ecosystem into another ecosystem.
Definition
Succession
Term
Give an example of succession.
Definition
After a forest fire destroys the plants, new plants begin to grow.  Then a meadow forms.  Then a forest can form.
Term
Give an example of a sudden event that can destroy an ecosystem.
Definition
A volcano that erupts.
Term
What are the first organism to establish themselves?
Definition
lichens and mosses
Term
--- in the soil is food to plants.
Definition
Nutrients
Term
How can nutrients be added to the soil?
Definition
bodies of dead animals decomposing
Term
What are two ways that people use ecosystems as a resource?
Definition
Some people use the lakes and rivers for recreation.  Wetlands may be drained for room to build houses and shopping complexes.
Term
Give two examples of how scientist consider all of Earth's ecosystems to be interconnected.
Definition

1.  Plants provide oxygen for people and other living organisms.

 

2.  Trees and plants help revent the soil from washing away.

Term
Give two examples of how damaged ecosystems can be restored.
Definition

1.  Old railroad beds can be turned into bike trails or hiking paths. 

 

2.  Mining areas can be reclaimed by filling in dirt and replanting.

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