Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Global Energy and Water Cycle Experiment wikipedia , lookup
Large igneous province wikipedia , lookup
Post-glacial rebound wikipedia , lookup
Freshwater environmental quality parameters wikipedia , lookup
Surface runoff wikipedia , lookup
Overdeepening wikipedia , lookup
Physical Processes: Mrs. Comeros Science Earth’s Surface: • The surface of the earth is made up of many different landforms. • A landform is a natural shape and type of land on Earth’s surface. U-shaped Valley V-shaped Valley Cave Atoll Lets Think!!! • Does Earth’s surface ever change? • What causes those changes? • Why? How? Examples? Physical Processes: • Earth’s surface is constantly changing. • Different natural events, such as earthquakes and volcanoes, change the size and shape of landforms. • These events are known as physical processes. Example: Mt. Saint Helens (1980) Before After Example: Earthquake/Tsunami in Japan Before After Mountain Definition: A natural rise of the earth with steep sides. Mountains are formed when plates collide and the land buckles upwards. Earthquake Definition: Occur when two of the earth’s plates move causing vibrations, or shaking to occur. Bam, Iran 12/26/2003 Volcano Definition: An opening in the earth’s crust from which lava flows. Mt. St. Helens 5/18/1980 Weathering and Erosion Weathering Definition: The wearing away of a surface through weather conditions, such as wind, rain or ice. Mount Rushmore It will not be there forever!! There is a pile of weathered material at the bottom. It is slowly being eroded down hill by gravity. Mrs. Degl 18 Erosion Definition: A process that breaks rocks down into tiny pieces and moves them to another location. Erosion: The Grand Canyon was formed by erosion. Running Water Wind Erosion Glaciers U-Shaped Valleys Formed when a glacier erodes a river valley from its original V shape to a U shape Continue V-shaped valley shaped valley U- Mass Movements Gravity • Landslides, mudslides, slump and creep landslide clip.mpeg Wave Erosion Beach Erosion Sea Arch Sea Arches Flooding Definition: An overflow of water onto land that is normally dry. Flooding is often caused by heavy rains. Flooding • Overflowing rivers add nutrients to the surrounding soil. • If the Mississippi River were to flood, there would be an increase in fertile soil in the MS River Valley. Deposition •Deposition is the process in which sediment laid down in new locations. •Caused by water, wind, ice, and gravity. Deposition Type of Deposition Creates Wind Sand Dune Water *Waves *River *Beaches *Delta Ice Moraine Gravity Landslide, Slump, Creep Picture What is a delta? • delta -- a place at the river's mouth, where the river splits into many different sections, forming a marshy triangle What is a river mouth ? • river mouth -- the place where a river empties into a larger body of water Delta – a fan shaped deposit that forms at the mouth of a river/stream when it enters a larger body of water. This is seen under the water. The particles are horizontally sorted. Mrs. Degl 44 What is a moraine? • moraine* -- An accumulation of boulders, stones, or other debris carried and deposited by a glacier Check for Understanding: 1. What creates new landforms? a) Earthquakes b) Volcanoes c) Erosion d) All of the Above Check for Understanding: 2. Which of these does not cause weathering? a) sunshine b)wind c) rain d)ice Check for Understanding: 3. Which United States landform was most likely caused by erosion? a) The Great Lakes b)The Mississippi River c) The Rocky Mountains d)The Grand Canyon Check for Understanding: 4. Which physical process most likely formed the Great Smoky Mountains? a) Flooding rivers b)Erupting volcanoes c) Plate tectonics d)Wind erosion Check for Understanding: 5. Which physical process most likely causes a river to overflow, adding nutrients to the local soil? a) Heavy rains b)Volcanic eruptions c) Strong Winds d)Melting Snow Check for Understanding: 6. Which physical process most likely shaped the feature shown? a) Plate tectonics b) Volcanic eruptions c) Water erosion d) Coastal flooding Check for Understanding: 7. Which physical process most likely created the mountain range shown on the map? a) erosion b) flooding c) plate tectonics d) volcanic eruptions