climate Flashcards
Weather
Environmental conditions such as wind, pressure, temperature, amount of precipitation, specific time , specific place.
Climate
- the characteristic pattern of weather conditions within a
region, including average monthly temperatures, precipitation, wind
velocity and other conditions averaged over a long period of time
(years)
Eccentricity
- the fluctuation of the Earth’s orbit around the sun
due to the gravitational attraction to other planets. Over a cycle of 100,000 years the Earth’s orbit changes from being almost circular to
more elliptical.
Tectonics Plate
The lithosphere (Earth’s solid crust) is composed of massive sections of solid rock. These sections are known as tectonic plates.
Every year these plates move a few centimeters. This
causes changes to both land and water masses which in turn, affects air and water circulation. Changes in air and
water circulation affect weather patterns.
Lithosphere
Solid crust of the earth
Hydrosphere
- All of the water in its different forms on Earth are composed by the hydrosphere
Atmospheric Layers
- Theatmosphere has been divided into 5
sections:
the troposphere, stratosphere mesosphere, thermosphere exosphere.
-Weather occurs mainly in the
troposphere and lower
stratosphere.
Wobble
- because the Earth is not a perfect sphere it wobbles on its axis.
Tilt
- The tilt of the Earth on its axis changes by approximately 2.4°over a period of 41,000 years.
- Greater the tilt, the greater the temperature differences between summer and winter.
Albedo
- The fraction of incident light or electromagnetic radiation that is reflected by the surface of an object, such as from Earth back into space. It is the object’s ability to reflect light.
Greenhouse effect
-Process by which gases build up thermal energy in the
atmosphere by absorbing infrared radiation from the Earth’s surface.
Anthropogenic
Increase in global average temperature, as a result of an increase in greenhouse gases due to human activities.
Conduction
- Transfer of thermal energy between two objects
that are in direct physical contact. Thermal energy always moves from a region of higher temperature to a region of lower temperature.
Convection
- Transfer of thermal energy by highly energized
molecules moving from one place to another. This movement can occur in liquids and gases but not solids.
Heat reservoirs
- Water can store more heat than air. Water has a large specific heat capacity. Therefore water heats up slowly and releases heat slowly.
- Water acts as a buffer to temperature changes in the atmosphere.
- Land masses near large bodies of water are warmer in the winter than more inland areas.