FINAL Sem. 1 (Part 3)
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)
What are the two factors that determine climate?
Temperature and moisture (precipitation)
________ provides the major differences between earth’s layers.
Density
________ Crust is lighter or less dense than ______ crust which is more dense.
Continental Oceanic
Name the earth’s layers in order.
Inner core, Outer core, Mantle, Crust
What layer is broken into rigid sections called plates and is composed of the crust and solid upper mantle?
Lithosphere
What provided scientists with the interior structure of the earth?
Seismic data
What do seismographs produce?
Seismograms
What is a seismograph?
An instrument used to record earthquake data
Why does magma flow up through earth’s surface?
Because it is less dense than surrounding rock material
What is fission? (radioactive decay)
Process of breaking heavy element into smaller pieces by creating a chain reaction
What provides the energy to create convection currents in the mantle causing the plates to move?
Radioactive Decay
Where do the vast majority of earthquakes and volcanoes occur?
Along plate boundaries
What are divergent plate boundaries?
Places where plates move apart and new material is added to the earth’s crust (Ex: MOR)
How are mountains formed?
By the convergence of two continental plates
What are convergent plate boundaries?
Ares where plates move together and form a collision or Subduction zone
What is the process of producing new crust at divergent boundaries?
Sea Floor Spreading
The viscosity of magma is determined by the _____ content.
Silica
Most earthquaes are the result of…..
The release of buitl-up energy along plate boundaries
What happens when the pressure on the fault overcomes the friction on the fault?
An earthquake occurs
What is the fastest wave that moves by expanding and compressing<
P waves
What is the slowest wave that moves side to side and travels like ocean waves?
S waves
What is the measure of the energy released by earthquakes?
Magnitude
Evidence for the _____ ______ ______ ______ comes from seismic data and pale magnetic banding
Theory of Plate Tectonics
How are the layers of the earth organized?
Difference in density