Mastering Base Levels

What is base level in bodies of water?

Base level in bodies of water is the lowest level that a water current can move without eroding its basin.

What is the definition of base level of a stream?

The base level of a stream can be defined as the lowest level to which running water can flow and erode.

What happens to the velocity of water at the base level of a stream?

The water at the base level of a stream has less velocity.

How does the decreased velocity at the base level affect the water's ability to erode?

The decreased velocity at the base level decreases the water's ability to erode or chip away at the land surrounding it. Signup and view all the answers

What is ultimate base level?

Ultimate base level is the lowest level that a stream can erode its bedrock. Signup and view all the answers

What is local base level?

Local base level is the lowest level that a stream can erode its non-resistant rock or sediment. Signup and view all the answers

Give an example of local base level.

An example of local base level is the bottom of a slide in a park where children slow down as they approach the lowest level. Signup and view all the answers

What happens to the children's velocity as they approach the lowest level of the slide?

The children's velocity slows down as they approach the lowest level of the slide. Signup and view all the answers

What is the effect of reaching the base level of a stream?

Reaching the base level of a stream means less movement or activity in the water flow. Signup and view all the answers

What is the importance of reaching the base level of a stream?

Reaching the base level of a stream is important because it decreases the water's ability to erode the land surrounding it. Signup and view all the answers

What are the two types of base levels?

The two types of base levels are ultimate base level and local base level. Signup and view all the answers

What is the ultimate base level?

The ultimate base level is sea level. Signup and view all the answers

Define local base level.

Local base level is the level where the velocity and eroding power of the water is temporarily lost. Signup and view all the answers

Give an example of a local base level.

An example of a local base level is a lake. Signup and view all the answers

How does a lake act as a local base level?

A lake acts as a local base level by slowing down the velocity of the running water and reducing erosion. Signup and view all the answers

What is another example of a local base level?

Another example of a local base level is a dam. Signup and view all the answers

How does a dam create a new local base level?

A dam creates a new local base level by stopping the flow of water and slowing down its velocity. Signup and view all the answers

What happens when sediment deposits build up behind a dam?

When sediment deposits build up behind a dam, the calm waters behind the dam fill up and eventually overflow, eroding the land downstream. Signup and view all the answers

Describe how a waterfall acts as a local base level.

A waterfall acts as a local base level by slowing down the flow of water behind the rock ledge, creating a temporary base level. Signup and view all the answers

What happens to the water that flows over the top of a waterfall?

The water that flows over the top of a waterfall has a lot of velocity and can continue to erode as it travels downstream. Signup and view all the answers