changes of earths surface
Terms
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- what is degradetional
- erosion in scientific terms
- what does chemical and mechanical weathering do?
- they change the landforms
- what does erosion do?
- moves weather materials
- what is weathering
- break down of rock on the earths surface into smaller pieces over time
- what are two types of weathering?
- mechanical and chemical
- what does mechanical weathering do?
- when rock is broken down phisically
- what does mechanical weathering create
- boulders, stones, pebbles, sand, silt, and dust
- what sic chemical weathering
- in rock changes creating a new rock carbon dioxide and water causes the change high temperature speeds it up
- what is a delta?
- it is a river that breaks a apart
- how is a river usually formed?
- it is formed by rain or snow
- what do rocks do against rivers
- rocks that are in the river move in a different direction constantly the rock is moved during this project
- what do rocks in rivers create
- they create meanders
- how is a waterfall formed?
- it is fromed by when it eats threw rock and then wears threw soft rock falling on the ground froming a water fall.
- how are humens ruining the echosystem?
- the are ruining the echosystem by littering
- where does a river start
- river starts at a top of mountain
- what are the rocky mountains called
- continental divide
- name four seasons
-
1)winter
2)summer
3)fall
4)spring - why are there different seasons everywhere?
- the Earth is tilted
- how many moon cycles are there in a year
- 3
- how many sesons are there
- 4
- how many months are there
- 12
- who ia Dr. MelGoldstien
- a fabulous lab meteorologist
- what are the four elements of weather
-
1)tempurature
2)wind
3)humidity
4)air pressure - what is the source of climate and weather
- the sun
- how much degrees is the earth tilted
- 23 1/2
- how long does it take to make one rotation
- 24 hours
- what is rotation
- on pin a day/24 hours
- what is a revolution
- one year a 365 1/4 days
- how amny days does it take to make a full revolution
- it takes 365 1/4 days
- what does the tilt create?
- it creates the Tropic of Cancer and the Tropic of Capracorn
- what is the shortest day of the year
- december 21 but in the south it is the longest day
- what is the longest day of the year
- June 21 but is the shortest day of the year in the south
- what does the sun's rays do
- some of the rays hit the equater and they dont spread which causes the equater to be so warm and the indirect rays that hit the higher or lower part spread out which gives them less heat the indirict rays move around two inches and the direct rays move none to 1 inch
- what is an equanox
- it is a latin word for equal night sun the equator march 21 and September 21
- latitude and climate is
- angle of suns rays weather and climate rays almost always fall directly on equater
- the tropics
- 23 1/2 degrees North and 23 1/2 south are hot year rond
- tempurature zones are
- these zones are in middle latitudes 23 1/2 degrees to 66 1/2 degrees N and 23 1/2 degrees to 66 1/2 degrees S are temperate zones cooler than the tropics and have wider roange of temuratures
- how fast can avalanches move
- 1 - 100 mph
- how many avalanches occur a year around the world
- around 1 million avalanches
- how many people die a year from avalanches
- around 200 people die
- how do avalanches usually occur from
-
1)amount of snow
2)terrain
3)weather - what si the most deadly type of avalanche
- powder avalanche
- name the types of avalanches
-
1)slab ava.
2)powder ava.
3)wet ava.
4)pirodistic flow
5) rock ava. - what is a slab avalanche
- it is the most common breaks offmakes big chunks of snow like rocks
- what is a powder avalanche
- it is thew most deadly of avalanches picks up snow, ice, and air as it goes extremely fast kills anyone in path
- what is wet avalanche
- the snow flows like water
- what is a Pirodastic Flow
- gas and smoke and rocks and mud at over 1000 degrees
- what is a rock avalanche
- many boulders flow like a river without water
- what is the hydrologic cycle
- it is the cycle of rain
- what is evaporation
- liquid turns to gas because of gas
- what is condensation
- where gas turns back to liquid because of cold air
- what is precipiation
- liquid falls back to earth
- what is perspiration
- another major source of water besisde the ocean its human sweat
- what is the process for the hydrologic cycle
- water to gas which traps heat and then gas to liquid where the heat is released
- what is transpirit
- it is when trees release H2O gas
- how do hail occur
- it starts out with sleet and then the heat si released getting the sleet cold to make the sleet bigger to become hail
- what is weathering?
- it is the breakdown of rock or the ground on the earthsurface and breaks down this rock to smaller and smaller pieces
- what is mechanical weathering
- it is the breakdown of rock phisically
- what is chemical weathering
- it is when acid rain or other material changes the phisicall structure by taking away the chemicals and changing the rock
- what is acid rain
- it is when polluted air combined with water vapor and then fall as acid rain
- what is erosion
- it is the movement of weathered materials like gravel soil and sand
- what is sediment
- small particles of soil sand and gravel
- what is loess
- the windblown depositsof rich minerals like durt and silt
- what are galciers
- huge slow moving sheets of ice
- what are moraines
- left behing ridgelike piles of rocks and debris
- what is latent heat
- it is the process off the hydrologic cycle where the liquid turns to gas and holds the heat then releases the heat and turns into the liquid again
- how does it rain
- it rains by the cluds having a amount of storage space and when theres not enough room for more water it rains because it can't hold it anyomore because it has to let go its gets to heavy
- what happens in the winter when it rains
- in the winter when it rains the storage area is smaller not allowing to hold as much water in the summer