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timeline of life2000

semester test 1

QuestionAnswer
What is the atoms, elements all floating in space matter before earth was formed
What happened to all the matter when it came together It started spinning, moving around and around
What does collide mean? to crash or bump into very hard Matter collided to make the earth
where did the craters come from? what are they they are large holes on earth from large pieces of matter hitting earth
what are some elements that was floating in space in the beginning? the elements that are on the periodic table of elements, like oxygen, hydrogen, helium carbon
why is the element carbon important? Carbon combined with other elements to form living organisms.- most life has carbon
what are compounds? give the easiest example Elements combine to make new substances, hydrogen and oxygen combine to make water
what were the first organisms called microorganisms--made of single cells without a nucleus
where did the first organisms form? in the ocean
what does evidence mean? proof that something happened even if we didn't see it
what proof did we have that microorganisms started in the ocean? Scientists found the oldest rocks that were under the ocean that contained fossils
what is a fossil? evidence or remains or impressions of things that do not exist in the present day
what organisms cam after the single celled ones multicellular--made of more than one cell
what is the study of classifying organisms taxonomy
what is the study of all living things biology
what is the study of a group of organisms and how they interact and live together in an area ecology
who are the two men that created taxonomy Aristotle, and Linneaus
what are the 7 groups of classification in order smallest to largest species, genus,family,order,class, phylum, kindgom
what name is used by scientists to talk about living organisms scientifc names
where did the scientific name come from the genus and the specie put together
what is the scientific name for humans living now homo sapiens
Created by: washington2000
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