units of earth
Alec I
plates
earthquakes are evidence that the plates are moving. the landscapes that these plates can make are mountains. This shows that the plates are moving into each other. Pangaea is a model of earth a billion years ago. this model shows that the plates have moved but they move very..very slow. all plates have fault line but only some of these you can see there are three different types of faults. there are normal faults, transform fault and a strike-slip fault.
normal fault
a normal fault occurs when the crust of the earth is extended. the hanging wall moves downward in relative to the foot wall.
reverse fault
a reverse fault is just the opposite of the normal fault the hanging wall goes downward and the foot wall goes upward.
strike-slip fault
a fault which rocks are misplaced in a horizontal direction.
erosion
about erosion
erosion is a type of weathering that moves rocks and soil and rots them away by air and water and some times glaciers. wind, water, and ice are the three main erosion types. water is the most effective. Air is the least most effective erosion.
Me
NOTHING
fossils
superpostion
this table shows the oldest on the bottom and the yougest on the top
old fossil
a long...long....long time ago this fossil was probably living but no its preserved in a rock
4 types of fossils
there are 4 types of fossils in this table mold, trace, cast, and live form fossil.
rocks and minerals
metamorphic
is formed undergoing heat and pressure.
igneous
formed through cooling, solidification of magma or lava.
sedimentary
deposited by water, and air
The rock cycle
the rock cycle is what rocks go through and turn into or form a rock. each rock is altered or destroyed. an igneous rock may break down and dissolve. the rock cycle shows how the 3 rocks are the same in some way and change from time to time.
quartz
Is formed by high heat and pressure in water.
identifying minerals
you identify a mineral by its, color, shine, hardness, and streak.
what i liked about the unit
my favorite part of this unit was when we did the stations and my favorite part of that was the rock lab.