1. Geology Geology The study of Earth’s structure, processes, and history Erosion Erosion The process of water/ice/wind breaking down rocks and carrying.

The Rock Cycle

1

GeologyThe study of Earth’s structure, processes, and history

ErosionThe process of water/ice/wind breaking down rocks and carrying them away

Vocabulary ReviewRaise your hands to define the following

words.

2

Let’s talk about… Uniformitarianism!

Pronunciation Practice:Uni-form-i-tar-ian-ism

3

James Hutton, a Scottish doctor and farmer, came up with it

The principle that geologic processes that happen today also happened in the past

What does that mean?Earth is A LOT older than people thought!

Uniformitarianism

4

Types of Rocks

Intro Video: https://www.youtube.com/watch?v=pm6cCg_Do6k (4:30)

5

Formed when magma or lava cools

The appearance depends on whether it cooled above or below the surface

(Magma = below the surface; Lava = above the surface)

Igneous

Obsidian Pumice6

7

Made when sediments pressed together to form solid rock

Sediment: small bits of rock, minerals, and remains of plants and animals

Sedimentary

Rainbow BasinNear BarstowA “syncline”

8

9

forms when existing rock is changed by heat, pressure, and/or chemical reactions

Usually happens deep underground

Metamorphic

Marble

10

11

Forces that build, change and destroy rock, such as:ErosionDeposition: streams carry broken

bits of rock to the sea or lakesHeat and Pressure: can bend and

cause chemical changesMelting: Deep in the Earth heat and

pressure are so great that the rocks melt completely

Volcanic Activity

The Rock Cycle

12

Glue in the ½ sheet of paper

Draw arrows between rocks to represent the Rock Cycle

Use page 271 in book and the poster

Activity Time!

13

14

A) erosionB) heat and pressureC) depositionD) precipitation

What might cause rocks to bend?

15

B) Heat and pressure

16