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Water. Climate and Weather
Vocabulary words from Crct book lessons 8, 9, 10
59
Science
6th Grade
01/25/2013

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Term
abyssal plain
Definition
the huge, dark, flat region of the ocean floor
Term
aquifer
Definition
a rock layer that collects and stores water.
Term
glacier
Definition
huge sheet of ice that moves slowly over land
Term
ground water
Definition
water located below earth's surface
Term
surface water
Definition
water that collects above the ground
Term
run off
Definition
water that flows over the surface of land.
Term
water shed
Definition
an area of land that drains into a river or lake.
Term
water vapor
Definition
water in gas state.
Term
transpiration
Definition
the process in which water vapor is released into the air from the leaves of plants.
Term
precipitation
Definition
the process in whch water falls to earth's surface in the form of rain, sleet, hail or snow; also, the water that falls.
Term
condensation
Definition
the process in which a gas changes to a liquid.
Term
water cycle
Definition
the continuous movement of water between Earth's surface and its atmosphere.
Term
evaporation
Definition
the process in which a liquid such as water changes to a gas.
Term
ocean basin
Definition
the part of the earth that is covered by oceans.
Term
continental slope
Definition
the part of the ocean floor that begins at the edge of the continental shelf and continues to the more flatter part of the deep ocean floor.
Term
continental shelf
Definition
the part of the ocean floor that begins at the shore and slopes gently towards the ocean.
Term
trench
Definition
a V shaped valley on the ocean floor that can be thousands of kilometers wide, and several kilometers deeper than the surrounding ocean floor.
Term
Mid ocean ridge
Definition
an underwater mountain range that forms on either side of a rift.
Term
rift valley
Definition
a valley formed where two tectonic plates move apart.
Term
seamount
Definition
an underwater mountain that is far away from mid ocean ridges.
Term
waves
Definition
a traveling disturbance that carries energy from one place to another.
Term
tides
Definition
a rise or fall of ocean water.
Term
current
Definition
a flow of water in a certain direction.
Term
salt water
Definition
the salinity, or salt concentration, of the oceans averages about 3.5 percent or 35 grams of salts per kilograms of water. Oceans Pacific, Atlantic, Indian. Pacific being the largest.
Term
Fresh water
Definition
Lakes, rivers, streams and glaciers hold the Earth's surface. Largest type of water lake is Great Lakes and Lake Superior.
Term
sublimation
Definition
changing of water from a solid directly to a gas with no intermediate liquid stage
Term
hydrosphere
Definition
composed of the earth's supply of water in all of its forms: liquid, frozen and gaseous.
Term
High Tide
Definition
body of water is in the dome phase.
Term
spring tide
Definition
Occurs every two months during a new and full moon when the earth, sun and moon line up in a row.
Term
Neap Tide
Definition
Occurs during quarter moon when the sun and moon form a right angle.
Term
Intermediate Tide
Definition
tides that occur during all of the other possible arrangements of the earth, sun and moon.
Term
Mariana Trench
Definition
Deepest part of the ocean.
Term
radiation
Definition
is energy transmitted in the form of rays or waves.
Term
convection
Definition
responsible for the jet stream and surface winds plus responsible for ocean currrents.
Term
weather
Definition
This includes temperature, winds, precipitation, and amount of sunlight.
Term
climate
Definition
the general weather pattern of a particular area.
Term
radiation
Definition
Is the energy transmitted in the form of rays or waves. It can travel through solid, liquid or gas.
Term
electromagnetic radiation
Definition
is visible light, infrared light and ultraviolet light. Energy that travels between the Sun and Earth.
Term
conduction
Definition
The transfer of heat between objects in contact with each other as a result of molecular action.  Occurs within and between all states of matter.
Term
Solar Radiation
Definition
Warms Earth's atmosphere by varying amounts. This is one of the causes of weather and climate.
Term
conductivity
Definition
Is a measure of the rate at which heat flows through it. Heat flows easily through materials such as metals.
Term
convection
Definition
is the transfer or flow, of heat in currents. Occurs mostly in liquids and gases.
Term
sea breeze
Definition
The wind blows off the water toward the land. The temperature over the land is greater than the temperature over the water. Air pressure is lower over the land, so the cool air will blow from the sea towards the land.
Term
land breeze
Definition
The wind blows off the land toward the water.  This happens when the temperature over the water is greater than the temperature over the land. Happens most often during the night and early mornings because the land cools at a quicker rate than the water.
Term
Coriolis Effect
Definition
Winds moving from high pressure regions near the equator tend to be twisted to the east as they move toward low pressure regions in the north.
Term
trade winds
Definition
The cool air that flows back to the equator.  These winds flow from east to west.
Term
Hurricanes
Definition
A large storm that forms over the ocean that is made up of winds of 74 mph which spirl inward. It gains energy from the warm tropical waters.  Usually move along in the direction of the trade winds (east to west).
Term
Prevailing Westerlies
Definition
Winds that blow from west to east and weather patterns.  The United States and Canada lie in this region and the temperatures are affected most by seasonal changes.
Term
Polar Easterlies
Definition
The air is quite cold and the dense air will sink and then spread away from the poles.  They originate in the east and blow towards the west.
Term
thunderstorm
Definition
Is a type of severe weather that brings hail, lightning, thunder, heavy rain and strong winds.
Term
tornadoes
Definition
A type of severe weather known for its funnel-shaped cloud and high winds.  Winds can reach up to 300 mph.
Term
Floods
Definition
This happens when rivers rise up to flow over their banks or when there are many days of heavy rains or melting snow.
Term
Drought
Definition
Is a long period of time in which there is very little rain. The water supply decreases.
Term
global wind pattern
Definition
The Earth has a pattern in which the air flows.
Term
Doldrums
Definition
Have little or no wind. Hurricanes originate in this area.
Term
Meteorologtist
Definition
A person that is able to predict the weather and monitors fronts.
Term
Front
Definition
These occur when a large mass of cold air meets a large mass of warm air.
Term
Cold Fronts
Definition
Occur when a cold air mass, which has a high density, pushes under a warm air mass.
Term
Warm Front
Definition
Is air that is pushed upward at a sharp angle, causing moisture to condense rapidly .  Heavy precipitation is often the result.
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