Show:
Weather or Not
Rock On!
Erosion
Don't Soil It!
Mass Movements
100
Name at least one catastrophic even that is the result of mechanical weathering?
What is fire or flooding?
100
This rock forms when sediment and the remains of tiny living things settle and harden.
What are sedimentary rocks?
100
What small particles are produced through weathering?
What is sediment?
100
What is formed when plants and other organic materials decay?
What is humus?
100
What do they call it when gravity slowly pulls soil down the slope of a hill?
What is soil creep?
200
What do they call it when cracks appear in rocks and sheets of rock peel away?
What is exfoliation?
200
These two elements break down and move rocks.
What are wind and water?
200
This is the primary force behind erosion.
What is gravity?
200
Name at least 2 things that make soil fertility?
What are kinds of rock, the climate, and vegetation?
200
When gravity pulls at rocks and sediments and a piece breaks off, it tumbles and gathers more. What is it called?
What is earth flow?
300
What do they call it when rocks rub against each other?
What are abrasions?
300
Three categories of rock
What ingeous, metamorphic, and sedimentary?
300
When weathered material moves from one location to another, what do they call the location where it all stops and gathers?
What is deposition?
300
What are 3 characteristics of sand particles?
Water drains through it quickly; they have a rough, grainy feel; and they are very tiny.
300
When water combines with soil, there is a mass movement. What is it called?
What is a mudflow?
400
This form of weathering transforms rocks into new substances.
What is chemical weathering?
400
These form below the Earth's crust by great heat and pressure.
What are metamorphic rocks?
400
What do they call it when gravity slowly pulls soil down the slope of a hill?
What is soil creep?
400
Equal parts of sand and silt are combined with about half as much clay to form what?
What is loam?
400
What do they call it when an entire side of a mountain rumbles down the hill?
What is a rockslide?
500
This type of weathering breaks rocks into smaller and smaller pieces.
What is mechanical weathering?
500
Why is the rock cycle only a theory of how rocks change?
Scientists cannot actually observe most of the processes that they think occur. In other words, they cannot prove it!
500
What is the difference between weathering and erosion?
Weathering breaks down rock. Erosion moves weathered rocks.
500
What are the 3 basic sizes of soil particles?
What are sand, clay, and silt?
500
What occurs when a mass of snow become unstable on a mountain and it starts to move?
What is an avalanche?