WARM-Up # 48THINK 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.

March 21, 2013 - Thursday

WARM-Up # 49

1.Chemical Weathering 2. Fault Block Mountains

3. Fold Mountains 4. Plateau or Erosion

March 22, 2013 - Friday WARM-Up # 50

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.

March 25, 2013 - Monday WARM-Up # 51

Write down two new things (related to our science lessons!) you learned from the Play-doh

mountains lab and the weathering lab?

Your weathering lab will be collected now.

March 26, 2013 - Tuesday WARM-Up # 52

Based on our science lessons can you describe what may have happened in

this picture?

WARM-UP # 53WHAT ARE THE THREE TYPES OF

ROCKS?

1. Igneous2. Sedimentary3. Metamorphic

WARM-UP # 54What is the difference between an extrusive

igneous rock and an intrusive igneous rock? What does it mean if the rock’s crystals are

large in size?

An extrusive rock is formed above the Earth’s surface while an intrusive rock is formed below

the Earth’s surface.

The more slowly molten rock cools, the larger the igneous rocks crystals will be.

WARM-UP # 55What are the three different types of igneous

rocks based on their compositions?

Basaltic, andesitic, and granitic

HMWK: Bring in 2 old Crayola crayons

April 12, 2013 - Friday

WARM-UP # 56Metamorphic rocks can be classified as

foliated or non-foliated. What does foliated mean?

FOLIATED metamorphic rocks are those in which the minerals have been flattened and

pushed down into layers. The layers look like pages in a book. Non-foliated rocks do not have

layers.HMWK: Bring in 2 old Crayola crayons

.

WARM- UP # 57

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

WARM-UP # 58What type of rock is categorized into detrital,

chemical, and organic? What does each mean?

Sedimentary Rocks are categorized as detrital, chemical, and organic.

Detrital - made from the broken fragments of other rocks

Chemical - form when dissolved minerals come out of solution

Organic - made of the remains of once-living things