Download presentation
Presentation is loading. Please wait.
Published byFrederick Evans Modified over 9 years ago
2
Warm Up All continents used to be contiguous at one point. What does contiguous mean? WHAT WAS THIS LAND MASS CALLED?
3
PANGEA!!!
4
Pangea Single landmass (Super continent) that existed approximately 300 million years ago. How did this supercontinent break apart? https://www.youtube.com/watch?v=TzzGPfVx 32M
5
Plate Tectonics
6
Today Earth’s Forces Ring of Fire Movie Warm-Ups When Hurricane Irene hit the east coast of the US and did millions of dollars worth of damage. If you were the mayor of a city, which could be affected by a hurricane, how would you protect the city and its citizens? – Write at least 5 sentences
7
How many different layers make up the Earth’s structure? What are they? Inner Core Outer Core Mantle Crust
8
What is the Earth’s Core? Solid metallic Inner Core Liquid metallic Outer Core Both made of iron and nickel
9
What is the Mantle? Surrounds the core Soft layer of molten (melted) rock called magma!!!
10
What is the Crust? Thin layer of rock at the earth’s surface
11
What is the Atmosphere? Layer of gas surrounding the earth
12
What is the Lithosphere? Solid rock portion of the Earth’s surface
13
What is the Hydrosphere? All the water elements of the Earth 1. Oceans 2. Seas 3. Rivers 4. Lakes
14
What is the Biosphere? Where plants and animals live Includes: Atmosphere, Lithosphere, & Hydrosphere
15
What is Plate Tectonics? Movement of large plates (crust) above magma in the mantle What proof is there? Fossils, plants and animals along coastlines of separated continents https://www.youtube.com/ watch?v=ryrXAGY1dmE https://www.youtube.com/ watch?v=ryrXAGY1dmE
16
What is the theory of Continental Drift? 1912 theory by Alfred Wegener Earth once had a supercontinent (all connected) Called “Pangea”
17
Plate Boundaries Plates collide, separate, and shift along these boundaries
18
What type of movements are there? 1.Divergent 2.Convergent: Subduction 3.Convergent: Collision 4.Transform
19
Review: Plate Tectonics Plate Movement – Spreading – usually ocean floor – Sub-duction – form Volcanoes – Collision – form mountains – Sliding/Shearing – cause earthquakes Boundaries – where plates meet – Divergent- moving apart – Convergent - collide – Transform – slide past each other
20
Activity Complete the Continental Drift WS. Grade based on completion. PUT IN BINDERS!
21
Seismograph Measures the size of waves created by the earthquake How are Earthquakes measured?
26
Volcanoes What is the Ring of Fire? Most volcanoes located around the rim of the Pacific Ocean
27
https://www.youtube.com/watch? v=QVOOo_BjhXA 24.25
28
What force might have caused this?
30
What is Weathering? Types of Weathering are… Mechanical – When rocks and other minerals are broken into smaller pieces. Chemical – When minerals are changed completely when they mix with water and air. Like metal changing to rust.
31
Video Clip http://www.youtube.co m/watch?v=hJfj-v5p5Ao http://www.youtube.co m/watch?v=hJfj-v5p5Ao
32
Plant roots work their way into rock crevices called joints. As the plants grow, roots create pressure on the sides of the crack making it bigger until the rock breaks apart. Plant Roots
33
Rocks are also broken up by friction and repeated impact with other rock fragments during transportation. Ex: River Rocks. Friction and Repeated Impact
34
Oxygen Iron combines with oxygen in the presence of water in a process called oxidation The product of oxidation is rust
36
Acid Rain Compounds from burning coal, oil and gas react chemically with rain water forming acids. Acid rain causes very rapid chemical weathering
37
What is Wind Erosion? – Loess is wind-blown silt, sand, and clay. – Can form sand dunes 100’s of feet deep!
38
What is Water Erosion? Precipitation Mudslides Avalanche
39
What is Glacial Erosion? Glaciation – changes in a landform made from a slowly moving sheet of ice (glacier) Moraines – rocks left behind after a glacier moves Creates new valleys, hills, or ridges
40
What is soil, how is it made? Through the process of weathering and erosion of rocks Humus – quality of soil 1.Texture of the soil 2.Amount of organic material in the soil
41
Activity Complete the Note Guide. SAVE THIS BECAUSE THIS WILL SERVE AS A REVIEW SHEET FOR YOUR TEST. Put in binder.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.