1. Objective (READ)

SWBAT identify the causes of

weathering.

2. Question of the Day.

(TURN OBJECTIVE INTO A QUESTION)

3. Warm-up (ANSWER) A. Data showing the number of students who live in

an apartment is an example of which of the Geographer’s Tools.

B. How could a police officer use GPS?

- Go in order, step 1, step 2, step 3

- directions are in parentheses

Warm-up PageDate Question of the

DayWarm-up

9/2 What are the causes of weathering?

1. Data collected about people = demographics

2. Could use it to log the scene of a crime so he can return in the future

Table of ContentsDate Title Lesson #

**Thinking Like a Geographer**

8/26 5 Themes of Geography 2

8/27 The 5 A’s 3

8/31 Geographer’s Tools 4

9/2 Weathering 5

1. Make a new page called “WEATHERING”.

2. Label it page 5.

External Processes

Erosion Weathering

• Weathering - changing rocks, land, and objects over time

• 2 types: Mechanical Weathering and Chemical Weathering

COPY WHAT’S IN THE BOX

Mechanical weathering – forces break rocks into smaller pieces by forcing them apart.

COPY WHAT’S IN THE BOX

Causes of Mechanical Weathering

1. Root wedging – roots break up rocks

2. Frost Wedging - ice breaks up rocks

3. Thermal expansion – heat causes rocks to expand and break

COPY WHAT’S IN THE BOX

Effects of Mechanical Weathering

Conclusion

• How is mechanical weathering like a hammer?

• Directions: Copy the sentence above and write one complete sentence responding to it in your notebook.

Chemical Weathering

• Chemical weathering - when something "eats away" at a rock instead of breaking it apart.

• Requires a chemical change in the rocks

COPY WHAT’S IN THE BOX

Causes of Chemical Weathering

1. Acid Rain

Directions:

- Copy the headline and each cause

Regions Sensitive to Acid RainOrso University Challenge Question: Why do Houston, Chicago, and Los Angeles have such low levels of acid rain?

Causes of Chemical Weathering

2. Water – creates a chemical reaction in certain objects

3. Chemicals – resulting from pollution or internal processes

Foaming pollution on rocks.

Effects of Chemical Weathering

At PH1, this New Zealand lake is pure hydrochloric acid

Naked trees

Rust

Analysis

- Create a weathering wonderland. - Sketch a landscape that includes examples

of weathering resulting from each of the 6 causes. (3 mechanical, 3 chemical)

- Label each cause

Rocks that have split apart due to thermal expansion.

Directions/Requirements

- Need 6 pictures (3 mechanical weathering and 3 chemical weathering)

- Need a caption explaining each cause

- Need a title

Weathering Wonderland Conclusion

1. On your Wonderland, draw a big M next to each example of mechanical weathering and draw a big C next to each example of chemical weathering.

2. You are the mayor of a new city called Weathering Wonderland.

- EXPLAIN three ways that weathering harms your city.

Weathering Assignment – Option 2

• You are the mayor of a new city called Weathering Wonderland. Your local news station is interviewing you about the problems your city has due to weathering. You will get more money from the federal government if you can convince the audience that your town is in trouble. (Remember a Volcano and Earthquake are internal processes)

Directions: - Select either option 1 or option 2 below. Either option will receive full credit. - Complete this in your notebook on your weathering page.

Option 1 – Write a paragraph explaining the problems you have during a typical day in your city that are caused by weathering. a. You must include at least 5 examples of weathering and the problems they cause in your townb. Include an explanation of why each example is a problem.

Option 2 – Draw a picture (or map) of your town’s problems related to weathering. a. You must include at least 5 example of weathering and the problems they cause in your town. b. Include evidence showing why each example is a problem. c. Label each example so they are easy for me to identify.

Closure

1. Answer the Question of the Day.