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timeline of life2000
semester test 1
| Question | Answer |
|---|---|
| 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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