Answer:
Each layer has a unique chemical composition, physical state, and can impact life on Earth's surface. ... Movement in the mantle caused by variations in heat from the core, cause the plates to shift, which can cause earthquakes and volcanic eruptions.
Answer:
Canada is divided into four subregions—the Atlantic, Core, and Prairie Provinces, and the Pacific Province and the Territories. Each subregion possesses unique natural resources, landforms, economic activities, and cultural life. of Canada's population is in urban areas within 100 miles of the U.S.-Canadian border.
In 1867, three colonies of British North America — Canada, Nova Scotia and New Brunswick — were united in Confederation, with the former Province of Canada being divided into Ontario and Québec.
Quebec and Ontario are often referred to as Canada's heartland, and with good reason. Three out of five Canadians live there. Ontario is the largest province in terms of population, Quebec in land area. Most of the settlement in these inland provinces is found along the Great Lakes and the St.
Answer:
elastic deformation: the rock returns to its original shape when the stress is removed.
plastic deformation: the rock does not return to its original shape when the stress is removed.
fracture: the rock breaks.
Explanation:
Stress is the force applied to an object. In geology, stress is the force per unit area that is placed on a rock. Four types of stresses act on materials.
A deeply buried rock is pushed down by the weight of all the material above it. Since the rock cannot move, it cannot deform. This is called confining stress.
Compression squeezes rocks together, causing rocks to fold or fracture (break) (figure 1). Compression is the most common stress at convergent plate boundaries.
Rocks that are pulled apart are under tension. Rocks under tension lengthen or break apart. Tension is the major type of stress at divergent plate boundaries.
When forces are parallel but moving in opposite directions, the stress is called shear (figure 2). Shear stress is the most common stress at transform plate boundaries.
Stress In Earth’s Crust
Enormous slabs of lithosphere move unevenly over the planet’s spherical surface, resulting in earthquakes. This chapter deals with two types of geological activity that occur because of plate tectonics: mountain building and earthquakes. First, we will consider what can happen to rocks when they are exposed to stress.
Cliffs are very heavy rocks and when there is too much weight it can cause cracks that weakens the structural integrity which can cause the cliff to either collapse or give way, falling on the ground below which can kill people crush cars or block roads. Hope this helps :)
