Weathering The Breakdown of Rock.

Slides:

Advertisements

Similar presentations

The Process of Weathering Rocks. Weathering The breaking down of rock into smaller pieces that remain next to each other. Weathering forms sediments.

Advertisements

Warm-up: What has occurred in these pictures? Please write a brief description.

Rocks and Weathering. What are rocks? Rocks are made from a combination of minerals and can be hard or soft depending on how the minerals are arranged.

Weathering. Miss Johnstone’s Expectations  Arriving and leaving the classroom  Presentation  Underline your titles  Always put the date  Draw in.

In this weeks lessons we will be investigating what is the nature of weathering and mass movement? By the end of today’s lesson you will be able to describe.

Starter What happens when you leave a glass bottle full of liquid in the freezer for too long? Why? It shatters!

The Process of Weathering Rocks

Geology The study of rocks. Geology of the British Isles The British Isles is made up of many different types of rock. These different rock types give.

What is Weathering? Weathering is the chemical or physical breakdown of a rock or mineral due to exposure to the atmosphere.

Onion skin weathering Weathering is the physical, chemical and biological breakdown of rocks in situ (same place). Onion skin weathering is also known.

AIM: What causes weathering and erosion?. Weathering is the physical and chemical breakdown of rocks into smaller pieces called sediment. Due to: Air.

We use the coast in many ways.  How could some of these uses conflict with tourism?  Use your earlier homework task to help you here.

Weathering. Definition Weathering is the breakdown of rock without transport. NO movement!!!!!

Soil Formation By :Reynaldo Thomas. Formation of Soil  Soil is an accumulation of tiny particles of rock which are formed when rocks are weathered. 

PHYSICAL WEATHERING YEAR 8_O 1st May 2007.

Science: 6.10B Science: 6.10B Rocks and How They Form.

What is Weathering?. Weathering The breaking down of rock into smaller pieces that remain next to each other. Weathering forms sediments. There are two.

 Take the title “Landscape Evolution”  Task:  Discuss with number 9 date all the different things that cause landscapes to change. 2 minutes  Now.

Explain the processes of erosion Justify peoples decisions for living along the coastline Outcomes State the different types of weathering Key Words Erosion.

5-3.1 Explain how natural processes affect Earth's oceans and land in constructive and destructive ways.

What breaks down rocks? 1. Erosion: process of wearing down and carrying away rocks 2. Weathering: breakdown of rock material by.

Unit 1 Lesson 2 Weathering

Weathering Processes.

How did this happen to the rock?

Weathering – the physical & chemical breakdown of rocks.

The Process of Weathering Rocks

There are 2 primary forces that shape our landscape:

What is mechanical weathering?

Mechanical weathering the effects of Frost

What is Weathering?.

Tuesday, November 8th Entry Task Schedule:

ALL ABOUT ROCKS Learning Objectives:

Mechanical weathering: the effects of frost

The Process of Weathering Rocks

Rocks and weathering.

8.4 Sedimentary rocks Weathering breaks up rocks into smaller pieces, or sediments. There are 3 types of weathering…

Weathering and Erosion

Rock Assessment D. Crowley, 2008.

1. What are the two main types of weathering?

Weathering and Erosion Mr. Scichilone

W Richards Worthing High School

Weathering and Erosion

Hot Deserts Revision.

TOPIC IX: WEATHERING AND EROSION

KS3 Chemistry 8G Rocks and Weathering.

Different types of erosion

Mechanical and Chemical

Weathering & Erosion.

Title: 7.1 Weathering (Mechanical Weathering.) Page #:48 Date: 1/2/13

Q: What has happened to each of these rocks & why?

Introduction Erosion and weathering are part of the forces of gradation which do battle with tectonic forces Tectonic forces: strive to build up rock.

Unit 1 Lesson 2 Weathering

Weathering D. Crowley, 2008.

Unit 2 Lesson 1 Weathering

W Richards The Weald School

Optional Starter: Exam practice: 4 minutes:

Unit 1 Lesson 2 Weathering

27/05/2019 Rocks and Weathering.

Rocks and Weathering.

Unit 1 Lesson 2 Weathering

Weathering and Erosion

Three Basic Definitions

Presentation transcript:

Weathering The Breakdown of Rock

What are rocks? Rocks are made from a combination of minerals and can be hard or soft depending on how the minerals are arranged. Rocks can be found here… …and here… …and here… …and here 13/11/2018

examples of erosion caused by weathering … 13/11/2018

The Needles, Isle of Wight 13/11/2018

13/11/2018

13/11/2018

1890 13/11/2018

1910 13/11/2018

1940 13/11/2018

13/11/2018 1975

Present day 13/11/2018

Freeze-thaw weathering Physical Freeze-thaw weathering Extremes of temperature can cause rocks to break. Freeze-thaw weathering involves water getting into a gap in the rock and then freezing when the temperature drops. Water expands when it freezes and this puts pressure on the rock. The ice melts next day, the now larger gap again fills with water, freezes and so on until the rock breaks.

Physical Onion skin weathering In very hot areas e.g. deserts, it is very hot during the day and very cold at night. This causes the surface of the rock to expand and contract frequently until it eventually breaks off. This is called onion skin weathering (or exfoliation).

Onion skin weathering Draw a similar cartoon of your own Extension: This type of weathering is common in particular places – where do you think these are and why?

Practical session. Please copy this table in your book (use a ruler) Slide added by MGN( please hide if you don’t find it useful) Write your conclusions: e.g. ‘Chalk is a rock of white appearance, it can be scratched. Its dry mass was…. and its wet mass is now…. Hence is a porous rock.’ Follow the same structure for the rest of the rocks