Exploring Rivers and Glaciers in Earth Science

This video tutorial covers the topics of rivers and glaciers, focusing on their characteristics and processes. It explains river velocity, stream discharge, and the stages of river development, including youthful valleys and old rivers. The video also discusses river erosion and deposition, highlighting the importance of curves in river channels. For glaciers, it describes features such as u-shaped valleys, moraines, and outwash plains, and explains how glaciers affect landscapes. The tutorial concludes with practice questions to reinforce learning.

What does stream discharge refer to?

• The speed of the water flow

• The amount of water moving through the stream

• The size of particles in the water

• The slope of the riverbed

Which stage of a river is characterized by a steep slope and the ability to move large particles?

• Flood plain

• Youthful valley

• Mature valley

• Old river

What is a flood plain?

• A steep area where the river flows quickly

• A flat area on the sides of a river where water spreads out

• A deep part of the river where erosion occurs

• A curve in the river that has been cut off

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Where does the fastest water flow in a river curve?

• In the middle of the river

• At the river mouth

• On the outside of the curve

• On the inside of the curve

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What happens to sediment when a river dumps into an ocean?

• It sorts by size

• It forms a U-shaped valley

• It creates striations

• It becomes unsorted

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What type of valley do glaciers create?

• V-shaped valleys

• U-shaped valleys

• Flat valleys

• Steep valleys

What are striations?

• Teardrop-shaped hills

• Parallel scratch marks on rocks

• Unsorted sediment deposits

• Sorted sediment deposits

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What is a medial moraine?

• Sediment deposited in the middle of a valley

• Sediment deposited at the end of a glacier

• A teardrop-shaped hill

• Sediment deposited on the sides of a valley

What is an outwash plain?

• A lake formed by a melting glacier

• A flat area with sorted material deposited by meltwater

• An area with unsorted material deposited by a glacier

• A U-shaped valley formed by a glacier

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What indicates the direction a glacier was moving?

• The location of a moraine

• The shape of a kettle lake

• The pointy part of a drumlin

• The orientation of striations