L14: CLIMATE CHANGE

Question 1

refers to the statistically significant changes in climate for continuous period of time.

Answer 1

Climate change

Question 2

Factors that contribute to climate change can be natural

Answer 2

internal process,
external forces
persistent anthropogenic

Question 3

CAUSE OF CLIMATE CHANGE

Answer 3

natural or human activities

Question 4

natural causes of climate change

Answer 4

Volcanic Eruption
Orbital Changes

Question 5

states “that as the Earth travels through space around the Sun, cyclical variations in three elements of Earth-Sun geometry combine to produce variations in the amount of solar energy that reaches Earth (

Answer 5

Milankovitch theory

Question 6

The three elements that have cyclic variations are

Answer 6

eccentricity, obliquity, and precession.

Question 7

is a term used to describe the shape of Earth’s orbit around the Sun.

Answer 7

Eccentricity

Question 8

is the variation of the tilt of Earth’s axis away from the orbital plane.

Answer 8

Obliquity

Question 9

is the change in orientation of Earth’s rotational axis. The precession cycle takes about 19,000 to 23,000 years.

Answer 9

Precession

Question 10

Precession is caused by two factors:

Answer 10

a wobble of Earth’s axis
a turning around of the elliptical orbit of Earth itself

Question 11

Human activities result in emissions of four principal greenhouse gases:

Answer 11

carbon dioxide (CO₂)
methane (CH4)
nitrous oxide (N₂O)
halocarbons (a group of s containing fluorine, chlorine, and bromine).