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What is needed for an object to be called a differentiated body?

A differentiated object is one which has a layered internal structure sorted by the densities of the different components. Materials of different densities were able to co-exist throughout these bodies until a certain size (a diameter of approximately 200 km) was reached.

What are the three main sources of internal heat for terrestrial planets?

1 Answer. Pressure, friction, and radiation.

Do higher temperatures make rocks weaker?

Higher temperatures make rocks weaker. Very high pressures, like those found deep within planetary interiors, can compress rocks so much that they stay solid even when temperatures are high enough to melt them under ordinary conditions.

Why is weathering bad?

The Earth’s surface changes continuously through weathering and erosion. Erosion by wind, water or ice transports the weathering products to other locations where they eventually deposit. These are natural processes that are only harmful when they involve human activity.

What happens when rocks cool quickly?

Any rock that forms from the cooling of magma is an igneous rock. Magma that cools quickly forms one kind of igneous rock, and magma that cools slowly forms another kind. When magma rises from deep within the earth and explodes out of a volcano, it is called lava, and it cools quickly on the surface.

What happens to rocks when temperature rises or decreases?

In Earth’s mantle, lava cools as it rises, forming solid rocks in our planet’s crust. Finer-grained rock such as basalt occurs when lava erupts or oozes to the surface and cools quickly. In metamorphic rocks, intense heat or pressure change the minerals of volcanic or sedimentary rocks.

How do change in temperature affect rocks?

Temperature changes can also contribute to mechanical weathering in a process called thermal stress. Changes in temperature cause rock to expand (with heat) and contract (with cold). As this happens over and over again, the structure of the rock weakens. Over time, it crumbles.

How does temperature affect erosion?

At a constant moisture content, increasing the soil temperature leads to less erosion, whereas increasing the eroding fluid temperature increases the amount of erosion.

Which mineral would most likely become rounded at the fastest rate when stumble along?

Right answer: Selenite gypsum.

What happens when a rock is crushed into a pile of fragments?

What occurs when a rock is crushed into a pile of fragments? (1) The total surface area increases and chemical composition remains the same.

Why do rocks lose mass and volume if they experience abrasion?

The constant collision or gravitational falling of the rocks causes them to slowly break apart into progressively smaller particles. Over time, abrasion processes will eventually break these rocks into progressively smaller particle sizes, such as gravel, sand, silt, and clay.

Why the soil is thicker above the limestone than it is above the quartzite?

Which statement best explains why the soil is thicker above the limestone than it is above the quartzite? The limestone is less resistant to weathering than the quartzite.

What is the best evidence that a glacial erratic has been transported?

What is the best evidence that a glacial erratic has been transported? It is located at a high elevation in a mountainous area. It is less than 25 centimeters in diameter. It appears to have been intensely metamorphosed.

How is erratic formed?

Erratics are formed by glacial ice erosion resulting from the movement of ice. Glaciers erode by multiple processes: abrasion/scouring, plucking, ice thrusting and glacially-induced spalling. Glaciers crack pieces of bedrock off in the process of plucking, producing the larger erratics.

What is the largest known erratic in the world?

Okotoks Erratic

What can we learn from erratics?

Some erratics are useful to scientists because they are of a distinctive rock type, which means that their source outcrop can be identified and located. Glacial erratics are therefore useful in reconstructing past glacier flow directions, the timing of glacier retreat, and even the type of glacier flow.