loose material, such as bits of rock , minerals, and plants and animal remains. These ___ become closely packed and cemented together.
What is sedimentary rock
100
of rocks, the break-up or disintegration by the actions of physical forces such as wind, water, and gravity,
What is mechanical weathering
100
the mixture of weathered rock, organic matter, mineral fragments, water, and air.
What is soil
100
the process by which materials from soil are dissolved and carried away by water.
What is leaching
100
the term used for magma when it breaks through earths crust, as in a volcanic eruption
What is lava
200
organic sedimentary rock
What is limestone
200
the temperature falls below 0oC the water freezes and expands, pushing the cracks wider apart. Each day, more water fills up the cracks, and it freezes again at night, pushing the rock pieces farther apart. Finally the rock breaks apart.
What is frost wedging
200
the dark coloured part of soil that is rich in nutrients, such as nitrogen, phosphorus, potassium.
What is hummus
200
of soil, containing the nutrients needed for plant growth.
What is fertile
200
melted rock, formed under earths crust by high temperature and pressure
What is magma
300
a type of rock made when high pressure and heat act on another type of rock and change it into a new form.
What is metamorphic rock
300
the break-up or disintegration of rocks through the effects of chemical reactions up on them. Ex. Acid rain
What is chemical weathering
300
the process in which deserts are formed through the erosion of nutrients-rich topsoil; after _____ the soil is no longer able to support plant life
What is desertification
300
the original rock that was acted on by high pressure and heat to form a metamorphic rock
What is parent rock
300
the naturally occurring process in which rocks continue to change form over long periods of time
What is rock cycle
400
the naturally occurring process in which rocks continue to change form over long periods of time.
What is rock cycle.
400
a type of rock made when high pressure and heat act on another type of rock and change it into a new form
what is metamorphic rock
400
of water, to drain through soil
What is permeate.
400
a layer of sedimentary rock
What is bed
400
the final materials and energy forms that a system produces by applying energy to raw material.
What is output
500
the process in which rocks are broken down and sediment is formed by mechanical, chemical, or biological means.
What is weathering.
500
the break-up or disintegration of rocks through the physical or chemical effects of living organisms.
What is biological weathering.
500
the type of soil that is good for plant growth; made up of sand, silt, and clay
What is loam
500
rocks that contain a high proportion of metals and metal oxides.
What is metallic ores
500
the materials or forms of energy that are used by a system to do work or to produce new materials