Ice Ages Flashcards
True or false
We are still in an ice age?
True
What is an ice age?
A period of cooling, marked by the presence of glaciers and ice sheets, such as those currently found in Antarctica and Greenland .
Name the cold periods and warm periods of an ice age?
Cold-Glacial
Warm-Interglacial
How many years has the earth been around for?
4.6 billion years
How major ice ages have their been ?
7
The ________ Ice Age being the recent one and the period covers __ Million years of the earth’s history.
Quaternary
2
What period is earth in at the moment?
Interglacial
Inter glacial period refers to the ______ in the longer period of glaciation known as the Quaternary Ice Age.
Interval
How many periods of cooling and subsequent glaciations have there been in the Quaternary Ice Age?
20
What was the most recent glaciation period?
Pleistocene
What is the climate like during a period of glaciation?
Cooler and drier
What is a glaciation?
A cold period marked by glacier and ice sheet cover.
The glaciation began _________,reached its peak _____ and was ended ________.
70000
20000
10000
What is meant by the term Albedo?
The amount of reflectivity surfaces have
Albedo for light and dark surfaces?
Light -high
Dark-low