Earthquakes and Volcanoes
Scale of magnitudes used to measure earthquakes.
What is the Richter scale?
The 3 rock families.
What are sedimentary, igneous and metamorphic?
These are pure, naturally occuring, non-living crystalline materials.
What are minerals?
This is the hardest mineral in the Moh's hardness scale.
What is Diamond?
The movement of rock and mineral grains from one place to another.
What is erosion?
A Scientist who measures earthquakes.
What is a seismologist?
The 3 types of weathering.
What are Chemical, Physical/mechanical and biological?
If you can see through a mineral when you hold it up to the light.
What is transparency?
This refers to the shininess of the mineral.
What is lustre?
Breaks down and wears away rock.
What is weathering?
The slowest of the 3 seismic waves.
What are surface waves?
Rocks are made up of these.
What are minerals?
These are the 7 properties used to identify different rocks and minerals.
What are; colour, cleavage/fracture, hardness, lustre, streak, transparency and crystal structure?
This is the visible evidence of the layers in a sedimentary rock.
What is stratification?
These are the 3 types of weathering.
What is mechanical, chemical and biological?
The place deep in the ground, where an earthquake begins.
What is the focus?
This type of rock forms when magma cools under the surface of the Earth.
What is an intrusive igneous rock?
Most minerals can be ___________ or _____________.
What are elements or compounds?
Scratches made in the bedrock, by glaciers carrying rocks.
What are striations?
These are the 4 main agents of erosion.
What are glaciers, gravity, wind and water?
The surface location directly above the origin of the earthquake.
What is the epicentre?
It is formed from rounded pebbles and small stones cemented together.
What is a conglomerate?
Minerals are not only found in rocks, but also in this area.
What is the human body?
Plates pushing together.
What are converging plates?
Large rocks caught up in a glacier and then left behind when the glacier recedes.
What are erratics?