Landforms
the plate boundary where new land forms
divergent boundary
type of weathering that does not change the composition of the rock
mechanical
when an oceanic plates slides under a continental plate it creates ...
formation of a sand dune
wind deposition
the spot where an earthquake first occurs
focus
Why does Florida not have glaciers or mountains?
glaciers - too hot because we are near the equator
mountains - we are not near a plate boundary
How would you know if rain is acidic?
if the pH is less than 7
if it is along a plate boundary
formation of a u shaped valley
glacier erosion
two examples of igneous rock
granite, pumice, basalt, obsidian
two ways a lake can form
a sinkhole fills up with rain or a glacier melts in a depression
the types of rocks and how they form
sedimentary - weathers and cements
igneous - melts and cools
metamorphic - heat and pressure under Earth
The three boundaries and their movements
convergent - comes together
divergent - Moves apart
transform - slide past each other in opposite directions
Landforms made from river erosion
canyons and v-shaped valleys
two examples of metamorphic rock
quartzite, marble
what things can increase the chance of mass wasting
steeper slopes, rainfall, pulling out vegetation, natural disasters
what things increase weathering
heat, rain, larger surface area, rock type
what causes the plates to move
convection currents in the mantle: hot magma rises, cool magma sinks
put plants because the roots act as nets
draw the diagrams of weathering, erosion and deposition
see the one dine in class
three landforms in florida and three not in florida
Not - glaciers, valleys, mountains, volcanoes, canyons
in Florida - rivers, oceans, lakes, delta, dunes, plateau
make a t-chart of the mechanical vs chemical weathering processes
mechanical - animal activity, abrasion, exfoliation, plant root growth, temperature change, ice wedging
chemical - acid precipitation, dissolution, living organisms, oxidation
the evidence that supports continental drift theory
1) same fossils on different continents
2) continents fit like a puzzle
3) same age rocks on mountain chains on different continents
landforms created by wave erosion
sea cliff, sea cave, sea arch , sea stack
the 5 different types of mass wasting
describe each one
rockfall - one rock falls
rockslide - a mass of rocks falls
landslide - a chunk of land falls
mudslide - mud (water&dirt) falls
creep - soil slowly goes down