EARTH SCIENCE Crossword

is one of several very large landmasses on Earth
the great size or extent of something
The hypothesis that states that the continents once formed a single landmass, broke up, and drifted to their present locations
super continent consisting of all known continents fitting together at one point in the Earth's history
the portion of Earth's crust that is usually below the oceans and not associated with continental areas, thinner and higher in density
part of outermost compositional layer of earth. Usually made of granite (mostly quartz and feldspar minerals)
a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
An underwater moutain chain where new ocean floor is formed
rigid blocks of crust and upper mantle - move along the hot upper mantle - make up the lithosphere
- 2 plates move away from each other - hot mantle rock rises - creates new sea floor - creates new oceanic crust (2-10 cm per yr) -Mid-Atlantic
- forms b/c of subduction - may cause a volcano
the way a mineral reflects light
the manner in which a mineral breaks along either curved or irregular surfaces
a measure of the ability of a mineral to resist scratching
the physical shade of a mineral; least reliable way to identify a mineral
Molten (melted) rock on Earth's surface
At natural state (room temp)
A mineral has these, sometimes can be seen other times microscopic. Will always break into this shape
Never was alive (not plant or animal)
Made of one element (a single Capital letter)
Made of more then one type of element
the splitting of a mineral along smooth, flat surfaces
Physical Features on Earth's surface
Places where tectonic plates meet; Tectonic plate boundaries
The hot and dense center of the Earth
What is the imaginary vertical line around which the Earth Spins?
Light that hits the earth at steep angles < 90. Spreads the energy of the light across more area.
What is the path the Earth takes around the sun called?
Motion of one object around another object
What causes seasons
Every four years a day is added to the calendar to account for the extra 1/4 day of earth revolution.