[DOC] [TLE] How Do We Investigate Climates of the Past? - Windows to the ... [PAR] Jun 15, 2009 ... This week, we will focus on how scientists figure out how climate has changed ... 
These types of data are called proxies. ... For example, tree ring records span the 
most recent few thousands of years; ice core ... 65 million years ago), we'd need 
to use records with a longer span like sediments and fossils. [DOC] [TLE] Tree Rings: Living Records of Climate - Climate Change Lesson Plan [PAR] layer of wood every year called a tree ring. Scientists examine these rings to 
learn ... about precipitation and temperature patterns by studying certain 
chemicals in ... Thus, to learn about the climate hundreds to thousands of years 
ago, scientists ... the Earth's climate over timecan help us determine whether 
changes that... [DOC] [TLE] The Study of Climate Change - Clues Beneath the Water ... [PAR] Many trees live to be hundreds of years old, and some live for thousands of years
. ... the small opening just as it would close a wound caused by insects or 
weather. ... Then scientists can examine the samples under a microscope and 
record ... From records like these, we know that about 12,800 years ago, North 
Atlantic... [DOC] [TLE] Dendrochronology: What Tree Rings Tell Us About Past and Present ... [PAR] Dendrochronology is the study of data from tree ring growth. ... Wood is a solid 
and strong material as we all know, valued for its longevity and ... years of the 
tree and you may notice that not all rings are uniform - some are ... There is much 
we can learn about the past climate, how freak season-long weather conditions,... [DOC] [TLE] Climate Change - Studying Climate Change - Tree Rings [PAR] Each year trees add growth rings, which can indicate what sort of growing ... 
Interestingly these rings are more than a temperature indicator, they also tell ... is 
very important when you consider that certain types of trees grow slowly over ... In 
order to know more about climate over an even longer period of time, in some 
cases... [DOC] [TLE] How Do Scientists Study Ancient Climates? | National Centers for ... [PAR] Feb 14, 2014 ... Image of increment borer to obtain tree-ring samples. Scientists use ... These 
samples can then be studied to determine the climate conditions during the life of 
the tree. Photo Credits: ... Both of these records can be too short to study certain 
climate processes that occur over hundreds to thousands of years. [DOC] [TLE] Climate at the Core: how scientists study ice cores to reveal Earth's ... [PAR] May 1, 2014 ... Light and dark bands alternate like tree rings in this ice core from the summit ... 
Examining the gasses trapped in ice cores is how scientists first learned ... 
Osterberg even thinks ice cores will help figure out whether ... years ago, the last 
time Earth's climate warmed to the temperatures the .... You Might Like... [DOC] [TLE] Historical Geology/Dendrochronology - Wikibooks, open books for ... [PAR] In this article we shall examine how it works, how we know it works, and the ... 
you can find out how old such a tree is by chopping it down and counting the 
rings. ... This is of some interest to paleoclimatologists, but what is important from 
the ... and which one actually does will depend on the weather over those twenty 
years. [DOC] [TLE] Weather & Climate of the Millennium - average, low, world, high ... [PAR] Some scientists look to satellites to reveal something about Earth's changing 
climate. ... From paleo records, we know that the climate of the past million years 
has ... to examine climate change going back hundreds and thousands of years 
using ..... However, these questions can be answered by analyzing records from 
tree... [DOC] [TLE] Unit Two - National Park Service [PAR] became the final resting-place for thousands of insects and plants. These ... 
About 35 million years ago, a large volcano, about 18 miles to the southwest, .... 
This lab activity will give you a basic knowledge of the principle

Question: By examining these in some trees, you can figure out what the weather was like thousands of years ago
Answer: the rings