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