Answer:
Brittle materials:
Brittle materials are those material which does not shows any indication before failure.It means that they break suddenly without showing any indication.These materials have zero ductility.
Ex :
1.Glass is the very common example for brittle material and in our house we can easily see that when ever glass fall on the floor it breaks in very small pieces.
2. Metal objects are made from metal they behave as brittle like cast iron.
3. The another familiar example in our house for brittle material is dry clay.
Ductile materials:
Ductile materials which shows a indication before fracture.It have a range ,within this range they did not fail.The ability of material to draw into wires is known as ductility of that materials.
Ex :Those object are made from carbon steel,gold,silver etc.
Elastic deformation :
To regain the original shape after removal of load is known as elastic deformation.
Ex: The familiar example of elastic deformation is rubber band ,when we apply a force on the rubber band then it goes under the deformation but after removal the load come back on the original position.
The combination of the weathering and erosion of the stream bank and the cutting into the bedrock from the velocity of the stream combine to make a "stream valley".
<h3>
What is stream valley?</h3>
A stream valley is an earthen dip where water is present at its lowest point. These valleys are the result of erosion, which is the transfer of decomposed rock or soil from one location to another.
The formation of stream valley is given below-
- The typically V-shaped stream valley is changed to a U-shaped valley because the U-shape offers the flowing glacier the least amount of frictional resistance.
- Because a glacier's cross section and viscosity are substantially greater than those of a river, its route has fewer and wider bends.
To know more about characteristics of weathering, here
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Answer:
A. During warmer climates, glaciers melt and sea level rises.
B. During times of cooler climates, the amount of evaporation from the oceans decreases, causing sea level to rise
D. The amount of glacial ice stored on land affects global sea level.
Explanation:
- The global sea levels and the amount of climatic pattern are related as wit the rise of the global mean temp of over 1 or 2 °C the climate of the earth will ward and there will be a natural rise of the sea levels due to the stored ice gets melted and additionally the thermal expansion will also cause the expansion of the water levels in the sea and the oceans.
- <u>When the sea levels fall there is a shift in the hydrological cycle. Water is evaporated and is stored on the glaciers as ice. As proved by the interglacial periods when the sea levels were high er more than the normal about 20 meters.</u>
Find the positive of NAFTA and negative about Mexico
