an elastic wave in the earth produced by earthquake
What is a seismic wave
100
iron and nickel
What is the inner core composed of?
100
chemical or physical process that change characteristic of rocks on the earths surface.
What is weathering?
100
fossils are the remains of and left by plants or animals long time ago.
What are fossils?
200
what tools is used to measure earthquakes? seismograph
What is the tools used to measure earthquakes?
200
the crust, the mantle, the outer core and inner core
What is the correct order of earths layers, starting with the surface?
200
Erosion is removal of rock particles by the ice, gravity, water, or wind itself.
What is erosion?
200
Inner core
What layer in the earth is fossils located?
300
plate boundaries
What is it called where most earthquakes happen?
300
sediments and basalt rocks
what type of rocks is the ocean crust covered in?
300
Chemical weathering is a type of weathering. Unlike mechanical weathering, chemical weathering breaks down rocks through chemical changes. Such as color.
What is chemical weathering?
300
dinosaurs or new world
What is one major discovery scientist have made because of the fossils?
400
convergent boundaries
What is the place where plates come together?
400
the inner core
which core has the greatest density? the inner core or outer core?
400
from weathering rocks. made up from mineral particles and organic materials.
how is soil formed?
400
yes
Do fossils show U.S time period? Yes or No?
500
magma is under melted rocks and lava is magma that is cooled.
what is the difference between magma and lava?
500
asthenopheres and dense rocks.
What is the parts that make up the mantle?
500
an avalanche
The sudden downslope of snow, ice and rocks is called