EROSION & WEATHERING
VIRTUAL FIELD TRIP

 

Education's purpose is to replace
an empty mind with an open one.

Malcolm Forbes

 

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Directions:

Click HERE to print the Virtual Field Trip Data Sheet.

You are going to go on a “Virtual Field Trip.” 
This field trip will allow you to visit a river we would not get to see otherwise.

You will make observations and answer questions on the Virtual Field Trip Data Sheet.

To go on this virtual field trip, you will have to open another web page.
This means that you will have two web pages open at the same time. 
Leave both of them open!

Let's get started –

Open the Virtual Field Trip by clicking on the link below :

http://www.vftn.org/projects/craig/ecology/succession/succession1.htm

Read the information in the first paragraph. 
Answer the following questions on your Data Sheet
:

1. What do we mean when we say that rivers and streams have erosional effects?

2. How is it possible for someone to find their property in a different state after a flood?

Read the second paragraph. 
This paragraph is a discussion of water velocity. 
* Remember that velocity is speed and direction
.*

3.  What causes different velocities in river currents?

4.  Where does water move the fastest?

5.  Where does water move the slowest?

6.  Describe the relationship between fast moving water and erosion.

7.  What happens to land on the inside and outside curves of a river?

8.  “Plants invade the newly deposited land in a process called ecological succession.”  Is this an example of primary succession or secondary succession?  Explain your answer.

Examine the diagrams to see the changes erosion and deposition can make in the shape of a river .

9.  Why aren't there many oxbow lakes in Texas ?

Look at the photograph labeled figure 6 .

10.  Where do you see deposition taking place in the river?

Click the     button on the field trip web site to take you to the next page .

Read the first paragraph

11. What is meant by a “disturbance?”

12.  Give 3 examples of man made disturbances.

13.  Give 3 examples of natural disturbances.

Continue reading .

14.  Describe ecological succession in your own words.

Observe the two photographs very carefully .

15.  What evidence of succession can you see?

Click the     button on the field trip web site to see the evidence of succession.

16.  Describe how we can tell succession is taking place along this river.

 

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