Unit 2-Objective 3

Question 1

How does Tilt cycle affect the global climate?

Answer 1

The greater Earth’s axial tilt angle, the more extreme our seasons are

Question 2

How does precession cycle affect the global climate?

Answer 2

makes seasonal contrasts more extreme in one hemisphere and less extreme in the other.

Question 3

How does the eccentricity cycle affect the global climate?

Answer 3

As it decreases, the length of our seasons gradually evens out

Question 4

How does the tectonic plate movements affect global climate?

Answer 4

The movement of the plates also causes volcanoes and mountains to form and these can also contribute to a change in climate. Large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.

Question 5

How does El Nino/La nina affect global climate?

Answer 5

are natural occurrences in the global climate system resulting from variations in ocean temperatures in the Equatorial Pacific. In turn, changes in the atmosphere impact the ocean temperatures and currents.

Question 6

How does volcanic activity affect the global climate?

Answer 6

reducing the amount of solar radiation reaching the Earth’s surface, lowering temperatures in the troposphere, and changing atmospheric circulation patterns.

Question 7

What has been the main cause of the increased CO2 concentration in our atmosphere?

Answer 7

Burning fossil fuels