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