One of the common minerals that make up most of the rocks of Earth's crust.
What is rock-forming minerals?
100
A structure of calcite skeletons built up by coral animals in warm, shallow ocean water.
What is coral reef?
100
The stress force called......pulls on the crust, stretching rock so that it becomes thinner in the middle.
What is tension?
100
A type of seimic wave that compresses and expands the ground.
What is P wave?
100
A term used to describe metamorphic rocks that have grains arranged in parallel layers or bands.
What is foliated?
200
A type of rock that forms from the cooling of molten rock at or below the surface.
What is igneous rock?
200
Each one looks like a small sack with as mouth surrounded by tentacles.
What is a coral animal?
200
The stress force called.........squeezes rock until it folds or breaks.
What is compression?
200
A type of seimic wave that moves the ground up and down or side to side.
What is S wave?
200
Non-foliated metamorphic rocks such as quartzite and marble do not display the banding or layering that are present in foliated rocks. This is because their parent rock was usually sedimentary and more pure in mineral composition than the parent rocks of foliated rocks.
What is non-foliated?
300
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together.
What is sedimentary rock?
300
It continues to grow upward.
If sea level rises above a coral reef, what may happen to the reef?
300
Stress that pushs a mass of ock in two opposite directions is called......?
What is shearing?
300
A type of seimic wave that forms when P waves and S waves reach Earth's surface.
What is the surface wave?
300
It forms from an existing rock that is changed by heat, pressure, and chemical reactions.
What does metamorphic mean?
400
Grain refers to the mineral particle sizes that make up the rock. The grain may be sand grains in sandstone, feldspar crystals in granite, or clay particles in mudstone.
What are the grains of a rock?
400
Limestone
What type of rock is made up of ancient coral?
400
A type of fault where rocks on either side move past each other sidewayswith little up-or-down motion.
What is strike-slip faults?
400
Vibrations that travel through Earth carrying energy released during an earthquake.
What is seimic wave?
400
They are normally formed inside or very near volcanoes. To form igneous rock magma must cool the it will turn into and igneous rock (intrusive or extrusive).
Where and under what conditions are metamorphic rocks formed?
500
Igneous rock forms when lava, magma, or cools. Extrusive igneous rock is when lava, or magma, cools on the Earths surface. Intrusive igneous rock, however, is when lava or magma forms beneath the earths surface.
How do igneous rock form?
500
A reef forms a sturdy wall that protects the shoreline from battering waves. This city was built by billions of tiny, soft-bodied animals that have skeletons made of calcite.
How do coral animals build a coral reef?
500
Tension, Compression, and Shearing.
What are three main types of stress in rock?
500
By seismic waves sending vibrations through earth's layers until it hits the crust. Which then creates an earthquake.
How does energy from an earthquake reach Earth's surface?
500
metamorphic rocks are mainly classified based on mineralogy. We have foliated and unfoliated metamorphic rocks based on the minerals it is made up of. If it is Schist, phyllite, shale and gneiss, it is said to be foliated whereas the unfoliated is made up of hornfels, quartzite and marbles.
What characteristic of metamorphic rocks do geologists use to classify them?