Page 72 - Science Course 2 (Book 2)

The Earth’s Geosphere Mo10-L1a: What are the Materials in Earth’s

Lesson 1 Geosphere?

cleavage

In this topic, you will learn the following the breaking of a mineral along a smooth, f at
lessons: surface.
Mo.10–L1a: What are the Materials in Earth’s
Geosphere?
Mo.10–L1b: What is the Structure of the
Geosphere?

What are the Materials in Earth’s
Mo10-L1a Geosphere?

KEY CONCEPTS: fracture
1. How do materials in the geosphere differ?
the breaking of a mineral along a rough or irregular
surface.
Vocabulary A-Z

Let us learn some vocabulary

luster
the way a mineral ref ects or absorbs light at its
surface.

Let’s Begin

Materials in the Geosphere

A mineral is a naturally occurring, inorganic solid
with a crystal structure and def nite chemical
streak composition.
the color of a mineral’s powder.

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