Main things to rmb Flashcards
What is eccentricity, when does it occur and what is the influence?
How circular the orbit is
Takes 100,000 years
It influences the seasons.
When circular there are no seasons and temperatures reach extremes in winter and summer.
What is precession when does it occur and what is the influence?
The wobble of the earth
Occurs every 24,000 years
It influences which season are in which month
June - summer December - winter
What is obliquity ( axial tilt) when does it occur and what does it influence?
how tilted the orbit is.
Every 24,000 years
It occurs between 22.5 ° and 24.5°
When it is the smallest, there’s less of a difference in seasons
When it is highest, there’s more of a difference in seasons.
What is the order of the circulation cells starting from north to south?
Polar, Ferrell, Hadley
Define enhanced greenhouse effect
Disruption to natural process caused by humans increasing the power of the greenhouse effect
What are tropical storms?
Large rotating storms that form over oceans in tropical areas
What are storms known as in Atlantic?
Hurricanes
What are storms known as in pacific ?
Typhoons
What are storms known as from India?
Cyclones
Where does storms occur in months June — November?
Northern tropics
Where does storms occur in months November — April?
Southern tropics
Define the Coriolis effect
The deflection of wind to the right in the northern hemisphere and to the left in the southern hemisphere.
Define meteorlogical causes to drought
This is when there is a deprived amount of rainfall than average
Define hydrological causes of drought
Affects of reduced precipitation
What are the 5 main areas affected by hydrological causes to drought
Streamflows, soil moisture, reservoir, lake levels, groundwater supplies
Define El Niño and where / what does it affect?
A reversal in normal conditions - cool and dry near Australia, warm and wet near South America
Define La Niña and where / what does it affect?
A strengthening of the normal conditions - very warm near Australia and intense rainfall, very dry at west coast of South America )
Where and when did hurricane sandy occur?
24th October 2012, it was present in the Caribbean Sea
Where was affected by hurricane sandy and when did it reach the USA?
Jamaica, Cuba, Bahamas
It reached USA 29th October 2012
Where and when was Typhoon Haiyan?
2013, Philippines
What level was typhoon haiyan on the saffir Sampson scale and when did it form?
Level 5, formed in South Pacific on 2nd November 2013
When did the drought begin in California?
2012 — présent
When did the drought start in Ethiopia?
1983 — present’
Where does the river Dee start and end?
Starts from the upland of snowdon and ends around Chester in the North Sea
What is the geology like at the start and end of the river Dee?
Start :
- hard rock
- V shaped valleys
End:
-softer rock
-floodplains
Where and what is Dawlish Warren?
It is a sand spit extending at around 2km located south of Devon
Name 3 advantages to the dawlish warren spit
Provides sanctuary for lots of coastal species
Protects Exe estuary
Very popular location for tourism
What and where is the new forest?
It is a national park spanning 480km2 to the south coast of England.
Name the 4 transportation methods and their function
Solution - dissolved carrying of rock
Suspension- rocks carried in water flow
Traction - large boulders rolling on seabed
Saltation - small pebbles bouncing on seabed
Name the 4 erosional processes and their function
Hydraulic action - sheer force of wave
Abrasion - sandpaper effect
Corrosion - dissolved rock
Attrition - bashing of rocks making them smoother and smaller
State the 3 types of mass movement and their function.
Mudflow - saturated masses of sediment move downhill
Slumping - rotational movement of material downhill
Rockfall - rapid fall of rock due to gravity
