Earth Science Sem 2 wk 5

Front

What is an avalanche?

Back

An avalanche is a rapid flow of snow, ice, and debris down a slope, often triggered by factors such as weather changes or human activity.

Front

What do striations indicate?

Back

Striations are scratches or grooves on rock surfaces that indicate the direction of movement of glaciers.

Front

What is an arête?

Back

An arête is a sharp ridge formed between two cirques that have eroded on opposite sides of a mountain.

Front

What are the signs of creep?

Back

Signs of creep include bent trees, tilted vertical structures, and broken underground pipelines.

Front

What conditions contribute to hail formation?

Back

Hail forms when water droplets exist in a liquid state in sub-freezing temperatures, encounter supercooled droplets, and are supported by strong updrafts and downdrafts.

Front

What is solifluction?

Back

Solifluction is the slow, downward movement of water-saturated soil and rock material, often occurring in permafrost regions.

Front

What is mudflow?

Back

Mudflow is a rapid flow of water-saturated soil and debris down a slope, often triggered by heavy rainfall or rapid snowmelt.

Front

What is creep?

Back

Creep is the slow, gradual movement of soil and rock down a slope, often caused by gravity and freeze-thaw cycles.

Front

What is a drumlin?

Back

A drumlin is a streamlined hill formed by glacial activity, typically composed of till and oriented in the direction of glacier movement.

Front

What is the role of updrafts in storm clouds?

Back

Updrafts are upward currents of air that help to form and sustain storm clouds, allowing for the development of precipitation.