U.O.I:important definitions

Important Definitions

Ecosystem:Is a complex set of relationships among the living resources,habits and residents of area.

Habitat:Is a special place where plant or animals live.

Just like you have a home or place to live.

Food Web:Consists of all the foods chains in a single ecosystem.

Each living things is ecosystems and part of multiple chains.

types of energy

Types of energy

Potential Energy:

Is energy stored in an object and have the capacity to do the work.

Kinethic Energy:

 Are  motions of  objects.   

Mechanical Energy:

Is the energy poseed by and object.   

Chemical Energy:

 Is energy stored of bonds.   

Electrical Energy:

 Is energy to do  all the works.

Key words

Key words

a)Energy:

Energy is the capacity of a physical system to do work. The common symbol for energy is the uppercase letter E. The standard unit is the joule, symbolized by J. One joule  is the energy resulting from the equivalent of one newton  of force acting over one meter  of displacement. There are two main forms of energy, called potential energy and kinetic energy.

b) Work:

an activity, such as a job, that a person uses physical or mental effort to do, usually for money.

c) Gravity:

Gravity is a force pulling together all matter (which is anything you can physically touch). The more matter, the more gravity, so things that have a lot of matter such as planets and moons and stars pull more strongly.

d) Movement:
change of place or position or posture   a particular instance or manner of moving usually used in plural.

e) Force:

A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is aninteraction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.  www.physicsclassroom.com

Source: whatis.techtarget.com                 www.merriam-webster.com      

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