Geoscenarios

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Glacier Noun

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[glay-sher]

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Glacier

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A large, persistent body of dense ice that is constantly moving under its own weight across the land.

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Example: The image shows how snow transforms into glacial ice by compressing and reducing air content.

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Terminal Moraine Noun

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[tur-min-ul mor-ayn]

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Terminal Moraine

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A ridge of unsorted sediment, called till, deposited at the furthest point reached by a glacier.

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Example: The image shows a terminal moraine, where a glacier deposits unsorted sediment at its furthest point.

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Glacial Till Noun

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[glay-shul til]

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Glacial Till

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An unsorted mixture of earth materials, including rocks and boulders, scraped up and transported by a glacier.

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Example: The image shows how glaciers transport and deposit a mixture of rocks and soil, known as till.

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Ice Age Noun

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[ice ayj]

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Ice Age

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A long period of reduced temperature in Earth's history, resulting in the expansion of continental and polar ice sheets.

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Example: The map illustrates the large ice caps that covered parts of the Earth during the Ice Age.

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Glacial Period Noun

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[glay-shul peer-ee-ud]

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Glacial Period

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A colder interval of time within an ice age, marked by the advance and growth of glaciers.

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Example: A graph showing temperature changes over time, highlighting glacial periods as colder intervals.

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Interglacial Period Noun

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[in-ter-glay-shul peer-ee-ud]

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Interglacial Period

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A warmer period of time that occurs between glacial periods, causing glaciers to melt and retreat.

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Example: The image shows how ice coverage has changed from 18,000 years ago to today, illustrating an interglacial period.

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Kettle Lake Noun

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[ket-l layk]

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Kettle Lake

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A depression formed by a melting block of glacial ice that was buried in sediment, often filled with water.

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Example: A buried ice chunk melts, creating a depression that fills with water to form a kettle lake.

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Bedrock Noun

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[bed-rok]

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Bedrock

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The solid, stable rock layer that lies beneath loose surface materials like soil and sand.

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Example: The image shows layers of soil with bedrock at the bottom, illustrating its position beneath surface materials.

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Glaciologist Noun

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[glay-see-ol-uh-jist]

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Glaciologist

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A scientist who specializes in the study of glaciers, ice sheets, and their effects on the Earth's environment.

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Example: A glaciologist drills into a glacier to study ice layers and climate history.

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Paleoclimatologist Noun

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[pay-lee-oh-kly-muh-tol-uh-jist]

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Paleoclimatologist

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A scientist who studies past climates using evidence from natural sources like ice cores, tree rings, and sediments.

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Example: The image shows how paleoclimatologists use ice cores, sediments, and other natural sources to study past climates.