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100
Give an example of Physical Weathering.
eg..root wedging, ice wedging, temperature change, mass wasting, creep
100
Give an example of Chemical Weathering.
eg...acid rain, rust, oxidation, dissolution, lichens
100
The process of moving sediment from one place to another is called ____________________________.
Erosion
100
The process of dropping sediment in a new place is called ___________________________________.
Deposition
100
Tiny pieces of broken rock or weathered materials are called ___________________________________.
sediment
200
What are the 2 main types of weathering?
Chemical and Physical weathering
200
List 2 things people can do to prevent weathering and erosion from taking place.
Building barriers and walls on beaches can prevent sand erosion and flooding/ Adding pebbles and rocks to sandy places can slow erosion. Planting grass and other plants can keep soil rooted.
200
Look at the picture displayed. Using what you know about weathering and erosion, explain what might have happened.
The waves of the ocean are carrying sediment. When the waves crash on the rocks the sediment and water are abrasive to the rock. The waves weather and erode it away.
200
What usually occurs when two land plates collide?
Mountain chains form
200
Name 2 things that you might see that would let you know that wave erosion has occurred along a beach or a shore?
barrier islands, sandbars, crumbling cliffs, arches, and pillars
300
What usually happens when two plates move away from one another?
Large cracks form and magma oozes up to form a new crust new crust is formed.
300
The downhill movement of wet soil due to gravity is called a _________________?
Mudslide
300
Explain how a valley is formed through weathering, erosion and/or deposition.
A glacier or river weathers and erodes the ground cutting and moving the sediment as it moves.
300
Which has a greater effect on landforms wind or water? Why?
Water has the greatest effect because it affects many types of environments. Wind erosion has a lesser effect because it is limited to areas that are dry or are along sandy coastlines.
300
Look at the picture. Using what you know about weathering and erosion, explain what might have happened.
The rock had a small crack that allowed water to enter. When the temperature dropped the water froze and expanded. The pressure of the ice caused the crack to get bigger. Eventually the crack became so large that the rock broke.
400
What type of soil would erode the fastest: wet soil, dry soil, or soil that is covered with grass and other plants? Why?
Dry soil would erode the fastest. It can be blown away easily by a gust of wind, as there is nothing to hold the soil in place
400
Physical features like mountains and valleys on the earth’s surface are called ____________________________.
Landforms
400
Flood water pounding against a canyon wall and wearing it down. Wind blasting sand at rock and carving out arches. Water getting into cracks of pavement, freezing, and breaking the pavement apart. Fast flowing water carves canyons in earth’s rock. Are these all examples of weathering, erosion, or depositions?
Weathering
400
Rain washing away soil from a hillside. A mudslide flowing down a steep hill. Wind blowing sand from one location to another. Are these all examples of weathering, erosion, or deposition?
Erosion
400
Layers of sediment forming at the bottom of the ocean. Glaciers dropping rock and sand to form terminal moraines. Deltas forming at the mouths of rivers. Are these examples of weathering, erosion, and deposition?
Deposition
500
Name 5 things that are causes of weathering.
Moving Water, Wind, Gravity, Glaciers, Ice, Plants, Burrowing Animals,
500
What are the three conditions needed for wind erosion to occur?
loose soil or sand, dry conditions, wind
500
List 2 ways that people can cause weathering and erosion to take place.
When people build things like roads, houses, and parking lots, soil is moved. When people water gardens, and fields, soil is moved. When people repeatedly walk across grass, soil is moved.
500
What is the primary force behind all mass movements?
Gravity
500
When oxygen reacts with minerals changing them into iron oxide the process is called _______________.
Oxidation