geo 101 - chapter 19

Term
1 / 14
local-scale conditions as defined by temperature, air pressure, relative humidity, & wind speed
Click the card to flip 👆
Terms in this set (14)
local-scale conditions as defined by temperature, air pressure, relative humidity, & wind speed
weather
the average weather conditions, along with a range of conditions, of a region over a year
climate
transformations or modifications in the Earth's climate over time
global climate change
the past climate of the earth
paleoclimate
difference between weather & climate

same parameters: temperature, humidity, etc
-___: daily, monthly, seasonal variations
-___: overall range of weather conditions

weather = ___; climate = ___
weather, climate
mood, personality
relatively warm global climate leading to the rise of sea level for an interval of geologic time
greenhouse (hothouse) period
a period of time when the Earth's temperature was cooler than it is today & ice ages could occue
icehouse period
oxygen has two (stable) isotopes:

heavy ___ & light ___
¹⁸O, ¹⁶O
when water evaporates, preferentially water molecules with ___ oxygen evaporate
lighter
the higher ratio of heavy to light oxygen in ocean water, the ___ the climate
warmer
to find past average temperatures, you need to know heavy to light ___ in past ocean wateroxygen ratioresearchers have found that the ratio of ¹⁸O to ¹⁶O depends on global climate at the time the shells or ice formedoxygen-isotope ratioby measuring the ¹⁸O/¹⁶O ratio in fossil shells in a successful of layers in marine sediment or in a succession of layers in glacial ice, researchers can quantity how global ___ has changed over timeclimateduring times of cooler climates, when continental glaciers grow, the ¹⁸O/¹⁶O ratio in shells tends to be ___, and the ¹⁸O/¹⁶O ratio in glacial ice (formed at high latitudes) tends to be ___higher, lower