2.  Solid portions of the Earth (crust and the upper most portion of the mantle).  Includes rocks, sediments and soils, surface landforms etc.

5.  All of the water on or near the Earth.  Includes oceans, rivers, lakes, and even the moisture in the air.  Moves through the water cycle.

7.  All living systems such as biomes or ecosystems.  Includes life on land, in the oceans and rivers, and even life we cannot see with the naked eye.

8.  Meteorological features and phenomena such as weather or aerosols (particles in the air).  Includes gases and small particles located above the Earth’s surface.

10. Do you think clouds should be classified as part of the atmosphere, or part of the hydrosphere?

11. How is Earth a system?

12. SystemKey wordExample Features AtmosphereAirCyclones, Thunderstorms. Lithosphere Hydrosphere Biosphere

13. https://www.youtube.com/watch?v=BnpF0ndXk-8

14.  How are Earth’s spheres interacting in this photo?

15.  Provide an example of a sphere interaction.  List sphere interactions that result from your own daily activities.  What affects spheres more, human activity or natural events?