Hardest Topics in Unit 1

Question 1

Eccentricity

Answer 1

Change in the shape of the earths orbit around the sun, from more circular to more elliptical (oval) and back again

Cycle has a period of 100,000 years

effects the amount of solar radiation recived at diffrent times of the year
influence both average temp and seasonal variation

Question 2

Obliquity

Answer 2

Also known as axial tilt

Refers to the tilt of earths axis relative to ots orbit around the sun

Varys between 22.1 and 24.5 degrees over a cycle of about 41,000 years

solar variation between summer and winter in more significant

Question 3

Precession

Answer 3

Wobble of hthe earth aic as it spins, similar to the way a spinning top wobbles.

The wobble causes the dirrection in which earths axis points relative to its obit around the sun

completing a full cycle approcimatly every 26,000 years

effects intensity and timings of seasons, impacting avergae temp and seasonal variation

Question 4

solar variation

Answer 4

solar radiation- suns energy can vary over time, leading to fluctuations in the amount of solar radition reaching the earth.

solar activity- sunspots are dark spots on the suns surface associated with strong magnetic activity. the number of sunsports varies over 11-year cycle known as rhe solar cycle.

Question 5

cc agreements

Answer 5

kyoto protocol- agreement aimed to bind emission reducation targets for develped countaries

Paris agreement - aimed to limit degree rising by 1.5 degrees. each contrie sets there own emison reduction targets and climate action

Montreal protocol- aimed to rpotect the ozone layer by phasin out the production and consumption of ozone-depleting sunstances