Weathering erosion

Water as an Agent
in Weathering and

Erosion

6.6 The student will investigate and
understand that water has unique physical
properties and has a role in the natural and
human-made environment.

d) water has a role in weathering

Learning Targets

I can model the effect of freezing water on rocks.

Model

I can plan and conduct an investigation to determine the

effect of acidified water on building materials.

Plan and
conduct

I can observe, record, and describe evidence of

weathering in my local environment.

Observe,

record, and

describe

Open Ended

Before we start, what do you already know about weathering and erosion?

Power of
Water

Water can shape landscapes and is a
powerful agent in weathering and erosion.

Water (rain, ice, snow) has shaped our environment by physically and
chemically weathering rock and soil and transporting sediments.
Let’s learn more about physical and chemical weathering and erosion.

Physical
Weathering

Freezing water can break rock
without any change in the
minerals that form the rock
(physical weathering).

This usually produces small
particles and sand.

Reorder

Reorder the following

1

2

3

• 1
• 2
• 3

Chemical
Weathering
Water, along with dissolved gases
and other chemicals, causes the
minerals in rocks to be changed,
leading to the deterioration of the
rock . This is known as chemical
weathering.

Example- acidified rain interacts with
limestone (CaCO3) in statues to
cause a chemical reaction.

Open Ended

In your own words, what is chemical weathering?

Erosion

• Erosion is the movement of the

materials by water or wind. This
can happen after a big storm or
flood.

Multiple Choice

Look at the picture. What is it an example of?

• chemical weathering

• physical weathering

• erosion

Weathering and Erosion Work
Together
• Weathering breaks

down rocks and
minerals into smaller
pieces

• Erosion moves rocks

and minerals

• This is how water can

change the landscape.

https://qsstudy.com/weathering/

Multiple Choice

Chemicals react with the minerals in rocks to change and break down the rocks is called

• physical weathering

• chemical weathering

• erosion

Multiple Choice

Moves rocks and minerals

• physical weathering

• chemical weathering

• erosion

Multiple Choice

Rocks broken apart by water, wind and ice.

• physical weathering

• chemical weathering

• erosion

Multiple Choice

Breaks down into smaller pieces.

• weathering

• erosion

Draw

Draw a picture that shows an example of either physical weathering, chemical weathering OR erosion. Label your picture .

You may NOT copy or insert images. You must draw your own.

Open Ended

What questions do you still have or an interesting fact you learned from the notes?

Poll

How do you feel about your understanding of weathering and erosion?

• Great! I could explain it someone.

• Good. I understand the information.

• I need more practice.

Match

Think about what you learned during this lesson then match the following.

• Breaking down rocks and minerals

• Chemicals react in rocks to them break down

• Rocks broken down by water, wind and ice

• Freezing water breaking rocks into smaller pieces

• Moving rocks and materials by wind and water.

weathering

chemical weathering

physical weathering

ice wedging

erosion

• weathering

• chemical weathering

• physical weathering

• ice wedging

• erosion

Poll

Did you enjoy using this method to go over the new information, rather than taking notes the usual way?

• No, its all the same to me.

• I liked this better. Let's do this more often!

• This was more tortuous than regular notes! Let's not do this ever again.

• I prefer the usual way we take notes, so I can refer back to them later.