Earth Science
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (24 张)
Minerals
inorganic elements that are essential to function the human body and obtained from food
lithosphere
outermost layer of the Earth, this includes outermost layer of the Earth
magma
very hot molten rock that includes gases, that come from the mantle, just below the earths crust.
sediments
material that has been broken down by weathering and erosion that is moved by wind or water and collects in layers.
lava
hot molten or semi-fluid rock erupted from a volcano or solid rock resulting of cooling.
igneous
rocks that form from the cooling of lava or magma as it is thrown through the air from a volcanic eruption
extrusive
igneous rock that forms when lava cools above the Earth’s surface
intrusive
igneous rock that forms when magma solidify’s inside the crust
pumice
a pale rock that forms when lava cools in the air. Pumice often floats on water as it is very light and full of holes that once contained gas.
scoria
a dark, igneous rock formed from gassy lava that cools quickly
abrasive
a property of a material or substance that easily scratches another
basalt
a dark, igneous rock with small crystals formed by fast cooling of hot lava. It sometimes has holes that once contained volcanic gases.
obsidian
a black, glassy rock that breaks into pieces with smooth shell-like surfaces
granite
a hard, igneous rock with different-coloured crystals large enough to see. It forms slowly below the Earth’s surface.
batholiths
intrusive rock mass that measures more than 100 kilometers across
lustre
a gentle sheen or soft glow on the mineral which you can see
moh’s scale
The Mohs scale is the scale of hardness of the mineral.
streak
A streak is a long, thin line or mark of a different substance or color from its surroundings.
Sedimentary rock
rock that is formed over a long period of time from particles of sediments
how is sandstone formed
this is formed from grains of sand that have been cemented together over a long time.
how is shale formed
formed from finer grains of sediment deposited by calm water in the form of mud.
conglomerate
contains grains of different sizes that have been cemented together.
how is mud stone formed
formed from finer grains of sediment deposited by calm water in the form of mud.
how is silt stone formed
has grains slightly larger than those of mud stone.