Why Do Rivers Curve?

The video explains how rivers meander, influenced by factors like muskrat activity and erosion. It describes the process of river curve formation and the creation of oxbow lakes. The meandering pattern is consistent worldwide, with curves forming due to disturbances and sedimentation. The video also raises a question about what Martians might call oxbow lakes.

What is the main difference between mountain streams and rivers on plains?

• Rivers on plains are always straight.

• Mountain streams are wider.

• Rivers on plains are confined by steep valleys.

• Mountain streams have fixed courses due to steep valleys.

How does a muskrat's burrow contribute to river meandering?

• It creates a disturbance that leads to bank erosion.

• It diverts the river's flow permanently.

• It strengthens the riverbank.

• It makes the river flow faster.

What happens to the flow of water on the inside bank of a meandering river?

• It speeds up and erodes the bank.

• It creates a new channel.

• It slows down and deposits sediment.

• It remains unchanged.

What is the typical length of one S-shaped meander in relation to the channel width?

• Six times the width of the channel.

• Four times the width of the channel.

• Twice the width of the channel.

• Eight times the width of the channel.

What is an oxbow lake?

• A crescent-shaped lake formed from a meandering river.

• A lake that never changes shape.

• A lake at the top of a mountain.

• A lake formed by a dam.