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Weathering/Erosion & Rocks/Minerals Unit Exam Flashcards

Weathering/Erosion & Rocks/Minerals Unit Exam Flashcards

Assessment

Flashcard

Science

8th Grade

Practice Problem

Hard

Created by

Emma Hayes

FREE Resource

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32 questions

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1.

FLASHCARD QUESTION

Front

Mineral

Back

A naturally occurring solid substance made of one or more elements. Minerals are the building blocks of rocks and have a specific chemical composition and structure. For example, quartz is a mineral.

2.

FLASHCARD QUESTION

Front

Silicate

Back

The largest group of minerals, made mostly of silicon and oxygen, often combined with other elements. Examples include mica and feldspar. These minerals make up most of Earth's crust.

3.

FLASHCARD QUESTION

Front

Crystallization

Back

The process by which a liquid cools and forms a solid with a specific pattern or shape, called a crystal. It happens when substances like minerals form from molten rock (magma) or water solutions.

4.

FLASHCARD QUESTION

Front

Luster

Back

Describes how a mineral reflects light. For example, a mineral can look shiny like metal (metallic luster) or dull and glassy (non-metallic luster).

5.

FLASHCARD QUESTION

Front

Streak

Back

The color of the powder a mineral leaves behind when rubbed on a streak plate. The streak color is often different from the color of the mineral itself.

6.

FLASHCARD QUESTION

Front

Hardness

Back

Measures how easily a mineral can be scratched. Scientists use the Mohs scale (from 1 to 10) to compare hardness. For example, talc is very soft (1), while diamond is the hardest (10).

7.

FLASHCARD QUESTION

Front

Cleavage

Back

The way a mineral breaks along flat surfaces. If a mineral breaks into smooth, flat pieces, it has good cleavage.

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