Download 8th Grade Fourth Six Weeks Vocabulary

8th Grade Fourth Six Weeks Vocabulary
TERM
8.9C
Topographic Map
Elevation
Satellites
Erosional Features
Weathering
Deposition
Sediments
Erosion
Satellite Views
8.10B
Weather
Atmospheric Movement
Air Pressure
Barometer
Air Mass
High Pressure Air Mass
Low Pressure Air Mass
Warm Front
Cold Front
Weather Map
Meteorologists
DEFINITION
A map showing changes in elevation of Earth’s surface
Indicates height to which something is relative to sea level
An object which is manmade and placed in orbit for various purposes including the
ability to take aerial images of land features
Earth’s surface that shows evidence of the natural processes of weathering and the
erosion of weathered materials
The mechanical or chemical processes that break rocks into smaller pieces
The layering of sediments over time
Small pieces of weathered rocks
The movement of weathered rocks from one location to another
Images taken over time that can be used for comparison and interpretation of
erosional features
The daily state of the atmosphere
Global air circulation patterns within the atmosphere help to Earth by gravity and
warmed as heat radiates from Earth; influenced by convection of warm less dense
air (rises) and cold dense air (sinks)
Atmospheric air pressure is the force exerted on Earth’s surface by the weight of
the air above the surface
An instrument that measures the amount of atmospheric pressure
Cold air will sink placing pressure on the surface of the Earth; warm air rises placing
less pressure on Earth’s surface
An air mass with cold sinking air that places greater pressure on Earth’s surface. Air
moves away from high pressure in a clockwise direction. High pressure systems
bring cooler, dryer air and clear weather.
An air mass with warm rising air that places less pressure on Earth’s surface. Air
moves towards areas of low pressure in a counterclockwise direction. Low pressure
systems bring stormy weather.
Forms at the surface of Earth when a warm, moist air mass overtakes a cool,
dense, and dryer air mass. Stormy weather occurs at the edge of the warm front.
Forms at the surface of Earth when a cold, dry air mass overtakes a warmer, humid
air mass. Stormy weather occurs at the edge of the cold front.
A weather map or chart shows the weather conditions at a specific point in time
over a specific region
Scientists who studies the Earth’s atmosphere and the causes of weather
conditions
8.10C
Weather System
Hurricane
Kinetic Energy
Ocean Currents
Temperature
Humidity
Condensation
Wind
A specific set of weather conditions occurring in the lowest levels of the
atmosphere, reflecting the configuration of air movement
A large, tropical weather system consisting of an extreme low pressure air mass
with heavy rains and wind speeds of at least 119km/h
Energy of motion
A directional movement of ocean water; surface currents result from steady winds
over the ocean surface; deep currents result from density variations due to
temperature and salinity differences
Measure of average kinetic energy of particles of matter in an object; expressed in
degrees Celsius or Fahrenheit
The change of liquid phase to gas phase
The change from gas phase to liquid phase
Movement of air created by convection in the atmosphere; moves from areas of
high pressure to low pressure
8.10A
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8th Grade Fourth Six Weeks Vocabulary
TERM
Thermal Energy
Atmosphere
Radiant Energy (heat)
Wind
Ocean Currents
Air Pressure
Coriolis Effect
8.7A
Rotation
Axis
Tilt
Revolution
Seasons
Hemisphere
Equator
6.11B
Gravity
Newton’s Law of
Universal Gravitation
Orbit
Mass
DEFINITION
Energy radiated by hot objects such as the Sun in the form of electromagnetic
radiation
Mass of air surrounding the Earth that is made up of 78% Nitrogen, 21% Oxygen,
and other trace gases
Type of energy from the Sun; light
Movement of air caused by convection in the atmosphere
Surface currents are caused by the friction of wind over the surface of the ocean;
deep ocean currents result from convection in the ocean due to temperature and
salinity differences
Atmospheric air pressure is the force on the surface of the Earth by the weight of
the air above the surface
The direction of air currents as a result of Earth’s rotation
The spinning of Earth on its axis that causes day and night to occur
The imaginary line extending from the North Pole to the South Pole going through
the center of Earth
The slant of Earth’s axis, which is 23.50 from vertical
Earth’s year-long elliptical orbit around the Sun
Weather changes due to varying amount of sunlight caused by the tilt of the Earth
during revolution
Upper and lower half of a sphere
An imaginary line that wraps around the center of the Earth and separates the Earth
into two equal hemispheres
The force responsible for pulling objects toward each other
The law that says every object in the universe attracts every other object
A curved path followed by a satellite as it revolves around an object in space
The amount of matter in an object or substance
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