Weathering and Its Effects
_____ is the mechanical and chemical processes that change objects on Earth's surface over time
What is weathering?
page 149
______ _______ is when physical processes naturally break rocks into smaller pieces
What is Mechanical Weathering?
Page 150
______ _____ changes the materials that are part of a rock into new materials
What is Chemical Weathering?
page 152
____ is a mixture of weathered rock, rock fragments, decayed organic matter, water, and air
What is Soil?
page 158
______ ______ is the starting material of soil
page 160
Weathering processes ___, ____, ____, and _____ ____ rocks
What is Break, Wear, Abrade, Chemically Alter?
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Intense heat from a forest fire can cause rock to ____ and ____
What is expand, crack?
page 150
Water is important to chemical weathering because most substances _______ in water
What is dissolve?
page 152
_______ ______ is the remains of something that was once alive
What is Organic Matter?
page 158
Soil can develop from ____ that weathered in the same place that the _____ first formed
What is Rock, Rock?
page 160
Pieces also known as sediment are called ____, _____, and _____
What is Sand, Silt, Clay?
page 149
when something is broken into smaller pieces the total surface area _____
What is Increases?
page 150
Acids increase the rate of chemical weathering more than ___ or ____ does
Page 152
_____ are small holes and spaces
What is Pores?
page 158
____ is the average weather of an area
What is Climate?
page 160
What is Sand?
page 149
_____ is the amount of space on the outside of an object
What is surface area?
page 150
Vinegar has a PH of of __ to __ so it is an acid
What is 2, 3?
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Soil is home to many __________
What is Organisms?
page 159
___________ is the shape and steepness of the landscape
What is Topography?
page 161
The smallest soil pieces are called
What is Clay?
page 149
_____ and ____ are both a result of mechanical weathering
What is Sand, Clay?
Page 150
_______ combines the element oxygen with other elements or molecules
What is Oxidation?
page 153
________ is the process of changing once living material into dark-colored organic matter
What is decomposition?
page 159
______ is all of the organisms that live in a region
What is Biota?
page 161