Earth science B Flashcards

Terms Definitions
jordan
amman
v-shaped valley
running water
hard water
more salt
lowest eneergy wave
radio wave
map
A flat, two-dimensional respresentation of the Earth's surface.
outer core
soild iron and nickel
nebula
first stage in star evolution
Crust
5-40 km
continent and ocean crust
communitiy
all the organisms that interact
fork
one or two or more tributaries
Seismograph
a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
Catastrophism
Theory that most scientists believed in the 1700s
crest
the highest point of a wave
hypothesis
which word means an educated guess?
Compression
stress that squeezes crustal rocks together
Hutton
Responsible tor the doctrine of uniformitariansim
A food chain begins with ___.
producers
Mafic
Describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color.
elevation
the vertical distance of height above or below sea level
Ozone
Ozone high in atmosphere is good, absorbs UV and forms naturally. Ozone low in atmosphere is bad (smog) created by humans.
Motion
When the distance between you and another object changes.
sources of energy
wood,natural gas, petroleum, coal, oil, hydroelectric
Surveyor's Level
Changes in the angle of ground
tidal power
Electricity generated by the movement of sea water caused by the tides
seismic waves
vibrations that travel through Earth carrying the energy released during an earthquake
use of doppler effect
measure movement of stars
natural levee
a landform that parallels some streams
tsunami
occurs when seismic waves are under water
Luster
Luster-how light is reflected from the surface of a mineral.
metallic luster-shines like a metal
nonmetalic-glassy pearly earthly
The places between plates moving together are called ___.
convergent boundaries
Topographic Maps
shows changes in elevation & shows natural features (landforms)
mountain
a high steep place, higher than a hill, the highest land form
transpiration
the emission of water vapor from the leaves of plants
200 million years ago
Pangaea began to break apart
oceanic plates
the lithospheric plates that are made of basalt and form the ocean floor;denser than continental plates
nucleus
The central core of an atom that contains the protons and neutrons.
photosphere
the lowest visible layer of the sun's atmosphere and the surface of the sun
sedimentary rocks
formed by processes powered by the sun
sand bar
long under water deposit of sand parallel to a shore line
convection
the transfer of heat through a fluid (liquid or gas) caused by molecular motion
lithosphere
the solid, outer layer of the earth that consists of the crust and the rigid upper part of the mantle
hard stabilization
any form of artificial structure built to protect a coast or to prevent the movement of sand along a beach; ex include groins, jetties, breakwaters, and seawalls
contour lines
are the narrow brown lines on topogrphic maps that indicate the landscape's elevation, or weight of sea level.
Doppler Effect
an apparent change in the wavelength of radiation-change in frequency of light or sound as it approaches and moves away from the observer
looks blue because of methane in its atmosphere; has the fastest winds of all the planets
Neptune
What is a type of coal mined in Mississippi and burned to produce electricity?
lignite
clastic sedimentary rocks
are composed of weathered bits of rocks and minerals
Akrose
25% or more of feldspar is in the rock.
talus
a sloping mass of loose rocks at the base of a cliff
parasitic cone
a volcanic cone that forms on the flank of a larger volcano
most energetically efficient food to consume is
grains, fruits, and vegetables
partial melting
The incomplete melting of a rock that occurs because the minerals that compose it melt at different temperatures.
Energy Level
Represents the area in an atom where an electron is most likely found.
What type of rock makes up the continental crust?
Granitic (Felsic)
fracture
1. (n) A crack or break in a rock.
2. (v) To break in random places instead of cleaving. Said of minerals.
shape of an asteroid
using computers to simulate how the measured reflected light varies with time.
affect a streams velocity
Slope, shape, channel width and depth, channel bed, and amount of water
white dwarf
a small, hot, dim star that is the leftover center of an old star
fresh water
not salty has little or no taste smell or color
How does a solar eclipse happen?
the moon blocks the sun's light
According to the law of supply and demand, what would occur if the supply of oil declined and the demand remained the same?
Oil prices would increase
An air mass is a large volume of air that is relatively uniform horizontally in
temperature and humidity
4. Where do valley glaciers originate? What direction is their movement? ecw#
They form in the mountains and move downward
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