The Earth's system
What does system mean?
System means a group of parts that work together as a whole.
What is a seismic wave?
When earthquakes occur, they produce seismic waves.
What does radiation mean?
The transfer of energy that is carried in rays like light.
What is a mineral?
A mineral is a naturally occurring solid that can form by inorganic processes and that has a crystal structure and a definite chemical composition.
Geologists classify rocks according to their what?
Color texture and mineral composition
What is the difference of constructive forces and destructive forces?
Constructive forces shape the land's shape building up mountains and other landmasses while destructive forces destroy and wear away landmasses through processes like erosion and weathering.
What is the difference between granite and basalt?
Basalt is dark, fine grained rock while granite is a rock usually a light color and has coarse grains.
What is the difference from convection and conduction?
The difference is convection is the heat transfer by the movement of a fluid and conduction is the heat transfer between materials that are touching.
What is the difference between a crystal and a mineral?
A mineral has a definite chemical composition and is inorganic while a crystal has a repeating pattern of a minerals particles forming a solid called a crystal.
What is the difference between granite and basalt?
Granite is a light colored rock while basalt is a dark colored rock.
Other than the weather, what force wears down the new rock formed by magma?
A force is erosion.
What are the features of earth's crust, mantle and core?
The three main layers of Earth are the crust, the mantle, and the core. These layers vary greatly in size, composition, temperature, and pressure.
How is heat transferred?
There are three types of heat transfer: radiation, convection, and conduction.
What is the difference between cleavage and fracture?
Fracture describes how a mineral looks when it breaks apart in an irregular way and cleavage is when a mineral splits easily along a flat surface.
How do geologists classify rocks?
To study a rock samples geologists observe the rock's mineral composition, color, and texture.
How Do Constructive Forces and Destructive Forces Change Earth?
Lands are constantly being created and destroyed by competing forces.
The crust is a layer of solid rock that includes both dry land and the ocean.
How do convection currents in the Earth form?
Heat from the core and the mantle itself causes convection currents in the mantle.
How are minerals Indentified?
Each mineral has characteristics properties that can be used to identify it.
What are the three origins of rocks?
Geologists have classified rocks into three major groups: igneous rocks, Metamorphic rocks, and sedimentary rocks.
What are the Parts of the Earth's system?
The Earth system has 4 main spheres: the atmosphere, the hydrosphere, the geosphere, and the biosphere. As a major source of energy for Earth processes, the sun can be considered part of the Earth system as well.
How do Geologists Learn About Earth's Interior?
Geologists have used two main types of evidence to learn about Earth's Interior: direct evidence from rock samples and indirect evidence from Seismic waves.
How do convection currents change?
Heating and cooling of a fluid, changes in the fluid's density, and the forces of gravity combine to set convection currents in motion.
Lodestone is magnetic. How might it be identified whether a mineral sample may be lodestone?
Metals and iron is how you identify lodestone.
Pumice is a type of rock that forms from molten material that erupts violently from a volcano. To what group does pumice belong?
Igneous rocks.