Presentation on theme: "Constructive and Destructive Forces"— Presentation transcript:
1Constructive and Destructive Forces CW:Warm UpConstructive and Destructive Forces NotesHW:1) NoneWarm Up:Why should we worry about Yellowstone? Justify your Answer.
2What's the earth made of?PangaeaPlate tectonicsLayers of the earth
3What's the earth made of? Pangaea is Pangea - Super Continent – What is causing the super continent to break apart?
4What's the earth made of? Plate tectonics are plate tectonics What is causing the continent to break apart?Where is the force coming from?Is this force constructive or destructive or both?
5What's the earth made of? Layers of the earth layers of the earth rap ( unofficial music video) – YouTubeLayers of the EarthInner CoreOuter CoreMantleCrust
6How does the force within the earth affect the outside of the earth?
7Hot SpotsHotspots were thought to be caused by a narrow stream of hot mantle convecting up from the mantle-core.Hotspot can burn through all of the layers of the crust and cool to form an intrusion, or stop before it makes it all of the way to the surface.
8FaultingA fracture in the continuity of a rock formation caused by a shifting or dislodging of the earth's crust, in which adjacent surfaces are displaced relative to one another and parallel to the plane of fracture.Faults cause Earthquakes.
11FoldingA fold occurs when one or a stack of originally flat sedimentary layers are bent or curved as a result of a permanent deformation.Folds in rocks vary in size from microscopic crinkles to mountain-sized folds.Folds form under varied conditions of stress, hydrostatic pressure, pore pressure, and temperature gradient.
19Questions: Connect the P.O.E. and video to the core and mantle. Why does the lava lamp and the convection bottles do what it does?How do you think the hot core affects the mantle?What about the two parts of the core?How does the POE relate to what happens in the earth?Finish Lab Write up From yesterday. (Surface Area Lab)
20On your Daily Catch, write a summary of what you learned today. Exit TicketOn your Daily Catch, write a summary of what you learned today.
21Constructive and Destructive Forces CW:Warm UpConstructive and Destructive Forces NotesHW:1) NoneWarm Up:Does the Earth look the same now as it did when it first came into existence? Justify your answer.
22What does constructive forces mean? What does destructive forces mean?
23True or False: The Earth’s surface has stayed the same for thousands of years
24The Earth’s surface is always changing! True or False: The Earth’s surface has stayed the same for thousands of yearsFalseThe Earth’s surface is always changing!
30What do weathering and erosion mean? On the next slide you are going to see two words. The animations of these words explain what they mean.As you watch this animation, write down what you think Weathering and Erosion might mean based on what you see.
37There are 4 factors that effect the rate of weathering: 1. Surface Area (exposure) - Exposing more surface area will increase the rate of weathering.2. Particle Size – Larger particles weather slower and smaller particles weather at a faster rate.3. Chemical Composition (what a rock is made of) – Certain rocks and minerals are naturally weaker than others, while others are more resistant (stronger).4. Climate – Warmer, moister climates have the most weathering. Heat & Water speed up all chemical reactions. This is the most important factor in weathering.
381. Chemical Weathering – the breakdown of rocks and minerals into smaller pieces by chemical action. The rocks breaks down at the same time as it changes chemical composition. The end result is different from the original rock. There are 3 types of chemical weathering:1. Oxidation – oxygen combines with the elements in the rock and it reacts. This the scientific name for rust.2. Hydration – water can dissolve away many earth materials, including certain rocks.3. Carbonation – carbon dioxide dissolves in water to form carbonic acid. This makes acid rain which chemically weathers (dissolves) rocks. Other acids also combine with water to make acid rain.Mrs. Degl
39There are two primary types of weathering: Chemical and Physical 2. Physical Weathering – the breakdown of rocks and minerals into smaller pieces without a change in chemical composition.Root/Plant Wedging/ActionIce/Frost Wedging/ActionExfoliation and Abrasion are also types of physical weathering.Mrs. Degl
40What evidence of erosion do you see in this picture? The process by which water, ice, wind or gravity moves fragments of rock and soil.What evidence of erosion do you see in this picture?
41Erosion is Movement of Sediment! This process, known as Erosion, is gradually wearing down the surface of the earth.Erosion is the process by which weathered rock and soil (sediment) are moved from one place to another.Erosion carves the Earth's surface creating canyons, gorges, and even beaches.What do you think has caused this rock to look this way?
42The intensity of wind erosion is determined by: As the wind blows it picks up small particles of sand/sediment and blasts large rocks with the abrasive particles, cutting and shaping the rock.The intensity of wind erosion is determined by:Sum (amount)SpeedSlopeSurface
44runoff, rivers and, streams Water Causes Erosionrunoff, rivers and, streamsCreates MOST of the changesin the Earth's landscape!
45Water causes ErosionWhen rain falls to the Earth it can evaporate, sink into the ground, or flow over the land as Runoff.When it flows over land, erosion occurs.Runoff picks up pieces of rock and "runs" downhill cutting tiny grooves (called rills) into the land.Rivers and streams are aconstant flow of runoff-they constantly weather and erode!
46Water causes ErosionHow much erosion takes place is determined by the:Sum (amount)SlopeSpeedSurfaceCan you act increasing and decreasing the four S’s?
47Ice Causes ErosionGlaciers wear down the landscape; by picking up and carrying debris that moves across the land along with the ice.
48Ice Causes ErosionGlaciers can pick up and carry sediment that ranges in size from sand grains to boulders bigger than houses.Moving like a conveyor belt and a bulldozer, a single glacier can move millions of tons of material!
49Ice Causes Erosion How much erosion takes place is determined by the: **Sum (Glaciers are massive!)SlopeSpeedSurface
50Gravity causes erosion Creep, Slump, Landslides, Mudslides, and Avalanches.SlowerFasterThese are examples of mass movement(or called mass wasting)landslide clip.mpeg
51Gravity causes Erosion How much erosion takes place is determined by the:Sum**SlopeSpeed**Surface
53Together, Erosion and Deposition build new landforms. Rock particles that are picked up and transported during erosion will ultimately be deposited somewhere elseDeposition is the process by which sediments (small particles of rock) are laid down in new locations.Together, Erosion and Deposition build new landforms.DeltasCanyonsMeandersFloodplains
54On your Daily Catch, write a summary of what you learned today. Exit TicketOn your Daily Catch, write a summary of what you learned today.
55Warm Up: What are the forces that cause the Earth to change? Rate of Weathering LabCW:Warm UpRate of Weathering LabHW:1) NoneWarm Up:What are the forces that cause the Earth to change?
56On your Daily Catch, write a summary of what you learned today. Exit TicketOn your Daily Catch, write a summary of what you learned today.
57Constructive vs Destructive Foces Project CW:Warm UpConstructive vs Destructive Foces ProjectHW:1) NoneWarm Up:What do you think soil and sand are made up of?
58On your Daily Catch, write a summary of what you learned today. Exit TicketOn your Daily Catch, write a summary of what you learned today.