g

g



Sediment Analyses

Sediment is the earth and rock that has built up in layers over time. Scientistsarelearning a greatdeal about past climate from studying these layers. Sediment layering provides information about where glaciers have been in the past. Ocean sediments provide a map of how ocean currents have flowed in the past. And fossilized pollen found in sediment layers tells us. about where different plants have grown in the past.

Tree Rings

You can tell how old a tree is by counting its rings because it grows a new ring every year. Tree rings also can tell us how much precipitation fell each year in the place where the tree lives. Precipitation is rain or snów or any other moisture that falls to the Earth. Scientists study the sizes of tree rings. The different sizes of the rings tell us about changes in temperaturę and precipitation.

What Does Ali of This Mean?

Weather stations, balloons, ocean buoys, and satellites tell us the Earth's temperaturę today. Ice cores, sediment layers, and tree rings tell us about what the Earth's climate has been like in the past. With this evidence, scientists are learning how climate changes over time.

What Are Scientists Still Unsure About?

How do clouds respond to changas te teBiperature ■and' pr eci pjtptjfn ? ,:HS^‘"€drPSslJis traitepsirt 'heat? How do climate and intense weather events like htirricanes affect each olher? As scientists try to answer these and other questions, they will discover many mdre clues about how the Earth's climate system works.

7) Greenhouses effect... Can we change the climate?

U may seem hard to believe that people can actually change the Earlh's climate. But scientists think that the things people do that send greenhouse gases MSsHmilrpiiJfSMS our planet warmer.


Osce, alt dfmate ctisnfps ddęurred, hsturatty-i * Hawewer, during the HWK    we

begar aOgrirfl o uf cf'matę IM environment througagricultural and fariustrtaf practlCeS;, The IflduSirial Revolution was a time when people fctegan usjng *S'K?«“SĄ. machlnes to make life easier. It started morę thaft 20Q yćars ago and changed the way hsattSBH

4H


Wyszukiwarka

Podobne podstrony:
Ask Me Everything5 1S a A meteorite is a lump of srace rock that survives a fiery passage fhrough Ea
Isolation An essential ingredient of any safe system of work is the method and integrity of the isol
1 SPECIAL DISCOUNT SUBSCRIPTION OFFERma m Electronics Australia is the biggest and most widely read
NOKIA GSM ArchitectureFigurę 2. The three subsystems of GSM and their interfaces The NMS is the oper
56630 skanowanie0038 (10) The curriculum development or design is the study and development of the g
201306152521 Find two epithets and a rhyme: Oiscuss the symbolism of the title of The CoWar"
The Knitters Bible8 C R E AT I V E OPTIONSfair isleKnit Perfect Practse knitting with both hands. i
IMAG0680 Christmas in Poland Fverycne foves Christmas It is the favourite and most eageriy awaiiSed
aftai2 We have to cjetthe acom into the earth. And <*]£ have to do itnohj. STAW BACK. ^ I CAN T
Humań error of an analyst 1) Validation of the method and SOP formulation 2) Training analysts and p
Download Teka Komisji Historii VIII. PDF eBooks Free couple of hours, I found the family, and when t
F00574 024 g002 o ANAEMIA The box shows the symptoms and signs that will help to indicate the d

więcej podobnych podstron