Samantha Oliphant, Sarah Mercer, Chris Fish, Xander Neagle
Earth's Atmosphere protects life by absorbing dangerous parts of the Electromagnetic Spectrum known as ultraviolet radiation. It also keeps Earth's surface warm.
2. The Hydrosphere includes what areas on Earth?
It includes all the liquid water in the oceans, rivers, lakes, clouds, and also the soil and groundwater. Solid water in snow and ice is found in the colder regions of the world.
3. How does the Geosphere and the Lithosphere differ?
The Geosphere includes the solid Earth portion of Earth's Systems. Rocks and soil are at the surface. The Lithosphere only includes Earth's crust.
Earth's Atmosphere surrounding Earth.
The Water Cycle
The water cycle is the journey water takes as it circulates from the land to the sky and back again. the Sun's heat provides energy to evaporate water from the Earth's surface (Oceans, Lakes)
Geosphere vs. Lithosphere
The Lithosphere is the rigid outermost layer of the Geosphere. The upper layer of the lithosphere is the crust. Beneath the crust is a layer of rigid mantle.
The Water Cycle
9.Why couldn’t there have been oceans during Earth’s earliest years? too much heat, evaporates the water
10. What evidence is there that comets were not big contributors to the Earth’s oceans? earth water would have be more like comets make up
11. Describe two processes that produce oxygen on our planet.photochemical dissociation- breaks up water using uv radiation photosynthesis plants take in CO2 and release oxygen
13. What evidence is there that the amount of O2 in Earth’s atmosphere has increased with time? Evidence that proves the amount of O2 in Earth's atmosphere has increased over time would be Branded Iron Formation. Iron is very reactive to oxygen and scientist can see the effects on iron from oxygen over time.
14. If Earth’s CO2 was 1,000 times higher in the primordial atmosphere, where did it all go? H2O formed oceans and CO2 dissolved into the oceans and precipitated out as carbonates.
15.Why hasn’t N2 (atmospheric nitrogen) changed like CO2 levels have? N2 is chemically inactive and stayed in the atmosphere.