Weathering

Mechanical vs.

Chemical Weathering

When rocks get broken down what is
this process called?

● Types of Weathering:

____________ & ______________

1. Weathering:

The breakdown of rocks into smaller
particles called sediments

● Types of Weathering:

____________ & ______________

1. Weathering:

Physical
(mechanical)
Chemical

2) What is physical weathering?

• Physical weathering:

2) What is physical weathering?

• Physical weathering: the breaking up of

rock into smaller particles without
changing the composition of the original
rock

3) What is chemical weathering?

• Chemical weathering:

•

• Dominates in ____ and ______ climates

3) What is chemical weathering?

• Chemical weathering: a change in the

rock that forms a new compound

• Occurs on the surface of rock materials

• Dominates in warm and moist climates

English Video
https://edpuzzle.com/assignments/6422d40e979dd342d2deadbc/watch

After finish watching the video complete the reading on paper.

Video:

​Spanish Video: https://edpuzzle.com/assignments/6422e944dae54d43390bdfd9/watch

Reading: Physical and Chemical
Weathering

Dropdown

​

Select answer

is the process that moves the sediments.

​

Select answer

is the process that changes solid rock into sediments.

Multiple Choice

What do the forces of weathering do to the landscape?

• gradually wear landscapes away.

• build huge mountains

• cause earthquakes

• drop sediments to the ground.

Match

Match the following

• Mechanical Weathering

• Chemical Weathering

breaks rock into smaller pieces physically without changing its composition

changing of the minerals in a rock through chemical reactions

Picture of mechanical weathering

Picture of Chemical weathering

• breaks rock into smaller pieces physically without changing its composition

• changing of the minerals in a rock through chemical reactions

• Picture of mechanical weathering

• Picture of Chemical weathering

●

Look at the slides and on your board name the type of
weathering
○

Physical Weathering

○

Chemical Weathering

Name that type of weathering:

Also known as mechanical
weathering. Occurs when landforms
are broken down by physical factors
in the environment.

Occurs when there are changes in
the chemical composition of rocks
and minerals from exposure to the
environment.

Oxidation

Acid rain

Frost wedging Or freeze thaw

Thermal expansion -
Thermal expansion
occurs when an
object expands and
becomes larger due
to a change in the
object's
temperature.

Hydrolysis

Exfoliation - Exfoliation is a process in which large flat or
curved sheets of rock fracture and are detached from
the outcrop due to pressure release:

Iron Oxides:

Biological Weathering:

Plant Growth:

Pollution increases acidity in the air

Abrasion:

Actions of animals:

Rocks in rivers are smooth from
rubbing against each other as they
move.

Exit Slip: