23 terms

Chapter 1 Vocab (7th science)

STUDY
PLAY
system
a group of parts that work together as a whole
energy
ability to do work or cause change
atmosphere
relatively thin layer of gases that form Earth's outermost layer
geosphere
has three main parts: a metal core, a solid middle layer, and a rocky outer layer
hydrosphere
All of the water on earth.
biosphere
the part of earth where life exists
constructive forces
forces that shape Earth's surface by building up mountains and landmasses
destructive forces
Forces that wear away or break down land masses on the earth's surface (weathering and erosion)
seismic waves
vibrations that travel through Earth carrying the energy released during an earthquake
pressure
the amount of force exerted per unit area of a surface
crust
Earth's outermost layer.
basalt
A dark, fine grained rock, found in oceanic crust
granite
A usually light colored, coarse grain rock that is found in continental crust
mantle
The layer of hot, liquid rock between Earth's crust and core.
lithosphere
A rigid layer made up of the uppermost part of the mantle and the crust.
astenosphere
lower part of the upper mantle, rocks partly melted
outer core
A layer of molten iron and nickel that surrounds the inner core of Earth
inner core
A dense sphere of solid iron and nickel at the center of Earth
radiation
Energy that is radiated or transmitted in the form of rays or waves or particles.
convection
the transfer of energy by the movement of a fluid
conduction
The direct transfer of heat from one substance to another substance that it is touching.
density
Mass / Volume
convection current
a current caused by the rising of heated fluid and sinking of cooled fluid