2. What are rocks and how are they a natural resource? Part 1.

• Geography
• Lower Secondary (Key Stage 3)

Introduction

This lesson is part of a series of lessons for year 7 geography, focussing on the inquiry of ‘how do we use our planet as a natural resource?’. Each lesson contains a variety of interactive learning experiences, including various engaging tasks, videos, discussion points and key geographical skill developments, such as drawing tables and field sketches. The lessons are designed to be taught in sequence but can be saved to your LessonUp account to be edited at your leisure, and saved for future usage.

Instructions

Save this lesson to your LessonUp home folder to edit and adapt this resource to your liking, or simply press ‘teach’ to teach it to a class right away! Some slides have instructions on how to use them, but can easily be changed to suit your needs and your classes. For any help with any resources, or how to use LessonUp, get in contact with us on [e-mail].

LO: To understand the qualities of the 3 rock types

Date: 

Date left blank for you to add in whenever you need it.

What kind of rocks can you name?

What does 'Geography' mean to you?

Geological timescale

Geologists (scientists who study the Earth) have created a series of diagrams that can explain how the planet has evolved over time. By using samples from layers of the Earth and comparing them around the world, we now have a pretty good idea of how old the planet is, and what life was on Earth at the time!

Earth lasagne?

This diagram shows a basic concept of how the layers of the Earth have formed over time, and what we call them! looking back over 4.6 billion years is a difficult concept for humans, so a diagram like this helps us visualise it a little easier!

Geological clock?

This 'clock' helps geologists worldwide have an 'agreed' timescale. It compresses all of Earth's geological history into one 24-hour day... where one hour represents roughly 192 MILLION years...

Do you rock?

Igneous rock

Sedimentary rock

Metamorphic rock

Intense heat and pressure 

Presence of fossils

Formed from magma or lava 

The presence of sand, pebbles or stone in the rocks

Weathering and erosion

Has layers

Contains crystals

Weathering

Chemical Weathering

Chemical weathering happens when rainwater that has absorbed pollutive substances, becomes slightly acidic, and makes contact with rocks through precipitation. The acid attacks the rocks and makes them crumble. Can you do a 2 minute sketch-diagram of this process?

Biological weathering

Can you do a 2 minute sketch of this diagram?

Freeze-thaw weathering

Can you do a 2 minute sketch of this diagram?

Here, encourage your students to complete a quick sketch of the diagrams for the weathering processes. If you want them to have more time, change the timer in the top right or complete this task at a speed that suits you and your needs!

How did this lesson go for you?

How did this lesson go for you?

How did this lesson go for you?

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