Learn on PengiAmplify Science (California) Grade 7Chapter 2: Sediment and Magma

Lesson 4: Regional Geology

Key Idea.

Section 1

Landscapes of Sediment

Key Idea

Vast, flat landscapes like the Great Plains tell a specific geological story. These regions are composed of thick layers of sedimentary rock, formed by the accumulation of weathered debris over millions of years.

This type of landscape is the result of surface processes driven by solar energy. The flat terrain acts as evidence of long periods of water deposition and compaction.

Section 2

Landscapes of Magma

Key Idea

Rugged, mountainous landscapes like the Rocky Mountains tell a different story. These peaks are largely made of igneous rock that was pushed upward.

Such formations provide evidence of deep underground activity. They reveal a history where Earth's internal energy melted rock into magma, which then cooled and was uplifted to form the high peaks seen today.

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 2: Sediment and Magma

  1. Lesson 1

    Lesson 1: Sources of Sediment

  2. Lesson 2

    Lesson 2: Sources of Magma

  3. Lesson 3

    Lesson 3: Conservation of Matter

  4. Lesson 4Current

    Lesson 4: Regional Geology

Lesson overview

Expand to review the lesson summary and core properties.

Expand

Section 1

Landscapes of Sediment

Key Idea

Vast, flat landscapes like the Great Plains tell a specific geological story. These regions are composed of thick layers of sedimentary rock, formed by the accumulation of weathered debris over millions of years.

This type of landscape is the result of surface processes driven by solar energy. The flat terrain acts as evidence of long periods of water deposition and compaction.

Section 2

Landscapes of Magma

Key Idea

Rugged, mountainous landscapes like the Rocky Mountains tell a different story. These peaks are largely made of igneous rock that was pushed upward.

Such formations provide evidence of deep underground activity. They reveal a history where Earth's internal energy melted rock into magma, which then cooled and was uplifted to form the high peaks seen today.

Book overview

Jump across lessons in the current chapter without opening the full course modal.

Continue this chapter

Chapter 2: Sediment and Magma

  1. Lesson 1

    Lesson 1: Sources of Sediment

  2. Lesson 2

    Lesson 2: Sources of Magma

  3. Lesson 3

    Lesson 3: Conservation of Matter

  4. Lesson 4Current

    Lesson 4: Regional Geology