EMILY Earth Science Week 3

Front

What is mechanical weathering?

Back

Mechanical weathering is the process of breaking down rocks into smaller pieces without changing their chemical composition. Examples include abrasion, freeze-thaw cycles, and root expansion.

Front

What is abrasion in the context of weathering?

Back

Abrasion is a form of mechanical weathering where rocks and sediments are worn away by friction and impact, often caused by wind, water, or ice.

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What are folded mountains?

Back

Folded mountains are formed when two tectonic plates collide, causing the Earth's crust to fold. Examples include the Himalayas and the Appalachian Mountains.

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What is a plateau?

Back

A plateau is a flat, elevated area of land that has been uplifted by geological forces. It can be formed by volcanic activity or the erosion of surrounding land.

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What are peneplains?

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Peneplains are areas of low, rolling hills that have been eroded from higher mountain ranges, resulting in a nearly flat landscape.

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What are the types of mountains?

Back

The main types of mountains include fault-block mountains, dome mountains, volcanic mountains, and folded mountains.

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What is the focus of an earthquake?

Back

The focus of an earthquake is the point within the Earth where the earthquake originates, and seismic waves begin to propagate.

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What is the epicenter of an earthquake?

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The epicenter is the point on the Earth's surface directly above the focus of an earthquake, where the effects of the earthquake are usually felt most strongly.

Front

What is hydrolysis in weathering?

Back

Hydrolysis is a chemical weathering process where minerals react with water, leading to the breakdown of the mineral structure.

Front

What is oxidation in the context of weathering?

Back

Oxidation is a chemical weathering process where minerals, especially those containing iron, react with oxygen, leading to rust formation and weakening of the rock.