What kind of igneous rock cools quickly & has small crystals?
Extrusive Igneous
100
What is the name given to the magma that reaches the surface of the earth?
Lava
100
What type of rock is formed from LOTS of heat & pressure?
Metamorphic
100
According to the Theory of Plate Tectonics, the Earth's plates float on the Earth's __________ layer.
Mantle
100
Which type of boundary occurs when two plates slide past each other?
Transform
200
What do scientists call the way Earth's rotation affects wind & ocean currents?
The Coriolis effect
200
What is the type of igneous rock that cools slowly & has large crystals?
Intrusive Igneous
200
What is it called when two ocean plates collide, but one is more dense than the other & is pushed down into the mantle?
Subduction
200
What is the name of the boundary created when two of Earth's plates separate?
Divergent
200
Which type of rock are granite, basalt, & obsidian?
Igneous
300
What do we call an undersea volcanic mountain found on the ocean floor?
Seamount
300
Scientists study a climate event in the Pacific Ocean caused by wind shifts, resulting in unusually warm water temperatures. What is this climate event called?
El Nino
300
The Theory of Plate Tectonics describes how Earth's crust is broken into what?
Plates
300
In our play dough demonstration of alternating stripes on the ocean floor, what vocabulary word from this chapter were we illustrating (the reason the molecules in the bands pointed in opposite directions)?
Polarity
300
Fossils are only found in sedimentary rocks. Why?
Plant or animal remains would be destroyed by too much heat and/or pressure in either igneous or metamorphic rock.
400
A stream of water that flows deep beneath the ocean's surface is called a _____________________.
Deep ocean current
400
Which type of rock is formed as a result of cooling lava?
Igneous
400
What is the name of the rock containing molecules that always lean toward magnetic north?
Magnetite
400
Which type of rock is formed when wind & water break down other rock types?
Sedimentary
400
There are two types of extreme weather conditions caused by El Nino. What are they?
Drought, intense (severe) storms
500
When cold, deep ocean water moves to the ocean's surface, it's called an ________________.
Upwelling
500
Tectonic plates collide (crash into each other) at a ___________ boundary.
Convergent
500
Give two examples of natural disasters caused by the movement of Earth's plates.
Volcanic eruptions & earthquakes
500
What are two important factors we've discussed that affect the DENSITY of ocean currents?