characteristics of earth
what produces earths magnetic fields?
Electric currents is the liquid iron core rotates produces a core
what are the types of mapping technology?
Lidar, radar, satellite images, global positioning system
rotation
The action of rotating around an axis or center
how long does it take to complete one revolution around the sun?
about 365 days
what do scientist learn studying the holes in earths crust?
earths he increases with depth
what are geysers evidence of?
earths hot interior
what protects living things from electrically charged particles from the sun?
earths magnetic field
what causes the cycle of day and night?
earths rotation
only a small percentage of earths water is what?
fresh
what two things does the sun produce?
heat and light energy
elevation
height above a given level
what three things help support life?
liquid water, atmosphere field was oxygen, and moderate temperatures
what are earths lower mantle, the outer core, and inner corner like?
lower mantle is partially melted - outer core is liquid - inner core solid
what three magnetic things does earth have?
magnetic field, North magnetic pole, and south magnetic pole
crust
outermost solid shell of a planet
contour lines
A line on a map joining points of equal height above or below sea level
topographic map
A map characterized by large-scale detail, usually using contour lines
what are maps a representation of?
Earth and its landforms
Core
The dense central region of a planet
revolution
The movement of an object in the circular course around another access center
mantle
The region of the earths interior between the crust and the core
lithosphere
The rigid outer part of the earth consisting of the crust and upper mantle
where does earth receive nearly all its energy from?
The sun
what keeps earth and other bodies in the solar system involving around the sun?
The suns gravitational pull
asthenosphere
The upper layer of Earth's mantle, below the lithosphere, which there is relatively low resistance to plastic flow and convection is thought to occur
what helps read distribute the suns energy?
atmosphere and oceans
where does much of earths interior he come from?
radioactive elements
what does a map scale show?
ratio for telling distances on a map to real life
earths tilted axis and uneven heating cause what?
seasons
what does the geological map show?
types of distributions of rocks