Life Cycle - Natural Environment (1A)
Pre Lab 

   
OBJECTIVES:
  • Comparing land and water environments.
  • Describing environments where organisms live.
VOCABULARY: 
  • environment
  • land
  • water
MATERIALS:

Students use a globe to determine different environments. 

 

BACKGROUND:

There are many different places on Earth where organisms can live. These areas can be called an organism’s environment. There are mountains, valleys, trees, snow, and water environments as well as hot and cold climate environments. Different types of organisms can live in similar environments. Animals, plants, and other organisms are adapted for living in certain areas of the world. For examples, whales have blubber so they can withstand cold temperatures and other mammals grow fur which protects them from the cold.

Different organisms have physical limits that make them more adapted to an environment. Birds fly so they have hollow bones and feathers which help them to fly. Large animals need support to walk so they have backbones and legs. It seems that all organisms have a place in this world and are adapted to fit into their own special place. Imagine a whale having legs or an animal having roots, this just doesn't happen.

There are two very different environments on this Earth, land and water. The organisms that live in these environments have very similar requirements. Organisms that live on land need to develop a way to combat gravity. They need legs or wings if they want to move. A tree develops a way to get water to move upwards (against gravity). Organisms in water use water to support their body so they tend to be more hydrodynamically designed.

PROCEDURE:
  1. Instruct students to look at the animal globe and make a list of those animals that live on land versus those that live on water. Name some of the animals and have them locate where they live. You will notice that many animals on land need to be near water.
      
  2. Instruct the students to look again at the animals on the globe and try to see how the organisms are fundamentally different. Try to get their ideas on the board, which should resemble the table below.

 

LAND

WATER

* large animals have backbones

* smaller organisms

* fur and hair

* have gills

* plants with roots/leaves

* blubber

* big animals

* small plants

* legs

* streamlined

 

* flippers

  1. If you have pictures of different organisms or Internet access, have students look at the different organisms and determine whether they live in a land or water environment.

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