Topic Two (1.2): What are the three rock groups?

Objectives for this topic

By the end of this topic you should be able to:

explain the terms: sedimentary rock, metamorphic rock, igneous rock, mudstone, sandstone, limestone, magma, lava, granite, basalt, slate, tuff;
describe how the rocks in each of the three groups are formed, and name at least one rock in each group;
say what is similar, and what is different, about granite and basalt;
explain the connection between mudstone and slate;
say that over half the rock (65%) in the Earth’s crust is igneous rock, only 8% is sedimentary rock but it forms a layer over most of the Earth’s surface.

Introduction

In this topic you will learn about the three rock groups - sedimentary, igneous and metamorphic - as well as how the rocks in each group are formed and their relative percentages in the Earth’s crust.

Interact Icon.png Working through your coursebook

geog.3, read through pages 8–9.
Watch this video on the different types of rocks:

WATCH – Rock Types (Twig) (only available on full course)

COMPLETE - Lesson 1 - slides 4, 5 and 6 (Kerboodle) Links to an external site.

COMPLETE - 1.2 Quiz Time! (Kerboodle) Links to an external site.

COMPLETE - 1.2 Skills Workshop (Kerboodle) Links to an external site.

Complete all the ‘Your turn’ activities on page 9.
Use this link to explore the rock cycle in more detail
This website has excellent information on all aspects of the rock cycle as well as quizzes to test your knowledge. You can refer to it throughout this topic.

EXPLORE - The Rock Cycle (Geological Society) Links to an external site.

Review

You will need to have signed up to the LS Geography Year 9 Group on Kerboodle, if you have not already done this, please do so now using the code provided on the linked page. (It may take one or two days for you to be assigned to the group).

COMPLETE- End-of-Lesson Test 1.2 (Kerboodle) Links to an external site.

Topic Two (1.2): What are the three rock groups?

Objectives for this topic

Introduction

Review

Support activity for this topic

Extension activity for this topic

Check your answers