Weather Chapter 3 Section 2 Notes An adaptation is any kind of structure or behavior that increases an organisms’ chance of survival in its environment. Thick fur on a ______________and the needles on a_______ are all examples of structural adaptations. Some animals go through periods of greatly reduced activity during cold weather called___________; this is an example of a behavioral adaptation. Weather Chapter 3 Section 3 Notes Climate Changes Seasons We experience short period of climate changes called Seasons, which are caused by changes in the amount of _____________an area receives. During Northern hemisphere summer the North Pole is tilted __________the sun. During the spring and autumn __________pole is tilted towards the sun. During the Northern hemisphere winter the North Pole is tilted_________ from the sun. El Nino & La Nina When the trade winds begin to _______________this is a weather event known as El Nino. This event can cause large changes in the Earth’s Weather. Another weather event where the trade winds are _________________is called La Nina. Climate Changes ____________ are periods of time where glaciers covered most of the world. There are many different ways in which climate can change: Catastrophic events: __________collisions and large volcanic _____________can affect climate over short periods of time. These events can throw particles into the air which can block out __________ radiation. Changes in solar output: changes in the amount of ___________ given off by the sun. Earth’s movements: a change in Earth’s ________ can affect the climate as well as shifts in the earth’s crust ex: the Himalaya Greenhouse Effect: A natural heating process where gases in the Earth’s atmosphere ______________. One of these gases is carbon dioxide. Global Warming: During the past 100 years, there has been a .6 degree Celsius change in the Earth’s ___________ temperature. This phenomenon is known as ________ warming. This increase in temperature can lead to glaciers ________ which will cause flooding. Human Activity: Humans add Carbon to the atmosphere by burning _____________ and cutting down large amounts of trees. The _____________ is the name of the path that carbon takes as it moves through the environment.