Energy+in+the+Earth+System+2

== 4. Many phenomena on Earth’s surface are affected by the transfer of energy through radiation and convection currents. As a basis for understanding this concept: a. Students know the sun is the major source of energy for phenomena on Earth’s surface; it powers winds, ocean currents, and the water cycle. b. Students know solar energy reaches Earth through radiation, mostly in the form of visible light. c. Students know heat from Earth’s interior reaches the surface primarily through convection. d. Students know convection currents distribute heat in the atmosphere and oceans.
 * Solar Energy in the Earth System**

=**//Solar Energy//**=

=Introduction:= Earth is a fascinating thing that we have upon us but, if we don't take care of it we wouldn't be setting a good environment for our children in the future. Solar energy will not at all pollute our air with carbon dioxide or other harmful greenhouse gases. Solar energy can be used to dry clothes,heat water evan produce energy for our cars and other things. The best thing of all is when there is a power outage you still have light!

= = = = = = =The Sun:= The sun is earths ultimate source of energy.Solar energy means coming from the sun. Earth is about 150 million kilometers away from the sun. Different regions of earth receive different amounts of solar energy. Heat is an amount of thermal energy transfered between objects or regions. Energy can be carried from one place to another by heat flow or by waves which includes water,light and sound waves or moving objects.Solar enrgy reaches earth through radiaton,mostly in the form of visible light. The sun sends down waves to earth for our organisums. Waves carry energy but no matter from one place to another. Energy from the sun travels through space as electromagnectic waves.

=Waves Carry Energy:= A wave is disturbance that transfers energy from one location to another. Sound waves form when objects vibrate,Waves carry energy but not matter. For example, when a wave travels the ocean, the water molecules move breifly from their rest positions. Electromagnectic waves are all the same kind of wavy disturbance that repeats itself over a distance called the wavelentgh. For example, these waves are transfered through light, microwaves, x-rays, t.v, and radio transmission. A wave or disturbance is an invisible thing called electric force field.

=**//Conclusions://**= Earth is here for us but we must take care of it. We need to save our world. California burns 80 million gallons of petrolium a day. We should try to stop this and start using solar energy. So when you have a bottle recycle it. HUG A TREE! By:Angie Hernanadez and Brianna Garcia