A. During an earthquake, the most violent shaking occurs at the a) vent b) focus c) Ring of Fire d) epicenter

B. The seismic waves that cause the most damage during an earthquake are a) P waves b) S waves c) Surface waves d) X-rays

C. Which of the following describes primary waves created by an earthquake? a) they cause damage on the surface b) they cause up-and-down movement in the rock c) they are the fastest-moving waves d) they are the slowest-moving waves

WARM-UP 66

WHAT IS A FAULT?

A fault is a crack in the Earth's crust.

WARM-UP 67

Warm-Up # 68

What are the three basic shapes of volcanos?

1.Cinder Cone

2.Shield

3.Composite Cone

Warm-Up # 69 – What are three factors that affect how violent an

eruption will be?

Warm-Up # 69 – What are three factors that affect how violent an

eruption will be?1) Water Vapor: More water vapor = bigger explosion2) Trapped Gasses

• How easily the gas escapes determines how violent the explosion

• Easy escape = quiet eruption• Difficult to escape = explosive eruption

3) Magma Type• Basaltic Magma = quiet explosion • Granitic/Andesitic = violent eruptions

Answer the question …Answer the question …

WARM – UP #70

Why does a

volcano erupt?

The answer is…

1. Two of earth crust plates collide with one plate going under the other plate.

2. The impact causes friction in the earth’s crust.

3. The pressure caused by the friction makes the rocks under the plates melt and help the magma rise.

1. Two of earth crust plates collide with one plate going under the other plate.

2. The impact causes friction in the earth’s crust.

3. The pressure caused by the friction makes the rocks under the plates melt and help the magma rise.

WARM – UP #70

What is the difference between chemical weathering and mechanical weathering?During chemical weathering, the substance of the rock physically

changes. Mechanical weathering causes a breakdown of rocks without a change in

chemical composition.

WARM-Up # 71

April 1, 2014 - Tuesday

WARM-Up # 72

1.Chemical Weathering 2. Fault Block Mountains

3. Fold Mountains 4. Plateau / Butte

April 2, 2014 - Wednesday

WARM-Up # 73

What is Mechanical weathering? Give two examples.

Mechanical weathering is the process of breaking down of rock by physical changes.

Examples: frost action, actions of plants and animals

WARM-Up # 74

Weathering involves processes that decompose rocks. Weathering

processes occur in place. No movement is involved in

weathering. As soon as a rock particle moves,

we call it erosion. We call it erosion if the rock particle is

moved by some flowing agent such as air, water or ice.

What is the difference between erosion and weathering?

WARM-Up # 75THINK ROCKS & WEATHERING

Prediction: What is ice wedging?When water in cracks in rocks freezes and expands.

Prediction: What is abrasion? The action of rocks grinding against each other and

wearing away exposed surfaces.

Prediction: What is differential weathering?Process by which softer rocks are worn away leaving

harder, more weather resistant rocks.

WARM-UP # 76

• What is water called that is NOT soaked up by the ground?

RUNOFF

Warm-Up # 77

What is the process of weathered materials being

moved by wind, water, gravity or ice?

EROSION

WARM-UP # 78WHAT ARE THE THREE

TYPES OF ROCKS?

1. Igneous2. Sedimentary3. Metamorphic

WARM-UP # 79What is the difference between and

extrusive igneous rock and an intrusive igneous rock? How can you tell by looking at them? Give an example of each type.

Intrusive igneous rocks form below the Earth’s surface. AKA plutonic. Most intrusive rocks have large, crystals. Example: Granite

WARM-UP # 79Extrusive igneous rocks form when magma makes its way to Earth's surface. AKA volcanics. Extrusive rocks have small crystals. Example: basalt

WARM-UP # 80

What processes can break down a metamorphic rock into

sediments?Erosion and weathering

.

WARM- UP # 81

How are sedimentary rocks classfied?

Sedimentary rocks are classified by their composition and by the manner in which

they formed. The three types of sedimentary rocks are

DetritalChemicalOrganic