Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
Equator
|
an imaginary line that divides the earth into the Northern and Southern Hemispheres.
|
|
|
Oblate Spheroid
|
a sightly flattened sphere.
|
|
|
Hydrosphere
|
all the earth's water. 71% f the earth is water, 97% is salty, and 3% is fresh.
|
|
|
Atmosphere
|
the blanket of gases surrounding the earth.
|
|
|
Mass
|
the amount of matter in an object.
|
|
|
Lithosphere
|
the solid porton of the mantle and the crust above it.
|
|
|
Asthenoshpere
|
a region of the mante just below th lithosphere.
|
|
|
Plasticity
|
the ability of a solid to flow.
|
|
|
P Waves
|
primary waves
|
|
|
S Waves
|
seondary waves
|
|
|
Weight
|
a measure of the strength of the pull of gravity on an object. it is measured in newtons.
|
|
|
Axis
|
imaginary straight line running the earth from pole to pole.
|
|
|
Seismic Waves
|
vibrations that travel through the earth.
|
|
|
Mantle
|
zone of rock below the earth's crust
|
|
|
Moho
|
the Mohorovicic discntinuit, boundary between the earth's crust and mantle.
|
|
|
Shadow Zones
|
location on the earth's surface where no seismic waves or only P waves can be detected
|
|
|
Magnetosphere
|
a region of space that is affected by the earth's magnetic field.
|
|
|
Gravity
|
force of attraction between all matter in the universe.
|
|
|
Law of Gravitation
|
principle that the force of attraction between two objects depends on the masses and the distance bewteen the objects.
|
|
|
Newtons
|
the measure used for weight
|
|
|
Oceanic Crust
|
crust beneath the oceans.
|
|
|
Continental Crust
|
the part of the crust on which the continents rest.
|
