Agenda: Water and Nitrogen Cycle: Agenda: Water and Nitrogen Cycle Warmup: List 3 physical tests for minerals and one chemical test. February 2, 2006: Note Groundhog saw his shadow. You need: Science Binder PENCIL (for drawing) Agenda Don’t forget you need to turn in, by Friday: One mineral with the following information: What it is used for, Where it is from How it is formed. 2nd period: G/T: Pick a mineral and tell what would have to happen in Floresville for that mineral to form here. Due Monday!


Rock Cycle: Rock Cycle Nitrogen Cycle Water Cycle


Rock Cycle: Rock Cycle


James Hutton (1726-1797): James Hutton (1726-1797) A farmer and Scottish geologist that was born in Edinburgh developed the concept of the rock cycle. He proposed: Rock changes from one form to another over time, the matter making up rocks is neither created nor destroyed but simply changed.


Sedimentary Rock: Sedimentary Rock Forms from cementing and compacting pieces of other rocks together conglomerate shale sandstone limestone


Metamorphic Rock: Metamorphic Rock Heat and pressure on the rock cause metamorphose (change) ex. marble gneiss schist


Igneous Rock: Igneous Rock Form from cooling magma (from volcanoes) obsidian pumice granite


Three Typesof Igneous rock: Three Types of Igneous rock Intrusive- cool slowly in the earth to form large crystals. Extrusive- quickly cooling on the surface, no crystals are formed. Pyroclastic- result from explosive volcanic eruptions which send lava and gases exploding into the air


Rock Cycle: Rock Cycle


Tectonic Plates: Tectonic Plates Earth’s surface is composed of mobile plates. What evidence do Scientist have for plate movement? Volcanoes, island building, faults earthquakes, and mountain building.


Was there one large continent?: Was there one large continent? What was the massive continent called? Pangaea What is the evidence that it existed? Similarity of coastline shapes


Water Cycle: Water Cycle Process of water moving continuously through the hydrosphere Hydrosphere- composed of liquid water (surface and Ground), frozen water (icebergs) and vapor in the atmosphere.


Water Cycle: Water Cycle


Nitrogen Gas: Nitrogen Gas Makes up 78% of troposphere and is required by organisms to make amino acids. Continuous cycling of N maintains healthy soils. Crop rotation- human influence to alternative nitrogen fixing crops.


Ozone: Ozone Nitrogen oxide produced by combustion of fuels, combine with water vapor to form droplets of acid in smog. It combines with ozone and damages vegetation, kills trees and irritates lungs


Nitrogen Cycle: Nitrogen Cycle


Slide21: Nitrogen Cycle


Predicting Results: Predicting Results Life on Earth exists because the atmosphere holds the right amount of the _______________________. Sun’s energy


Slide23: In an Earth cycle what can be disrupted? Energy Nutrients gases


Slide24: A disruption of the delicate balance of a cycle could affect__________. Organisms Producers Consumers decomposers


Slide25: A disruption of organisms will lead to an imbalance in a complex ________. Food web


Water Cycle Questions: Water Cycle Questions How does the volcano effect the water cycle? What energy source drives the water cycle? What could be harmful to the water cycle? (min. 3 items) How does the runoff effect the water cycle? List 3 benefits of the water cycle


Slide27: How does the volcano effect the nitrogen cycle? What energy source drives the nitrogen cycle? What could be harmful to the nitrogen cycle? (min. 3 items) How does the runoff effect the nitrogen cycle? List 3 benefits of the nitrogen cycle. Nitrogen Cycle Questions