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scientific method1.2
| Question | Answer |
|---|---|
| scientific method | logical approaches to scientific research |
| What is the order of the scientific method | 1.state the problem 2.gather information 3.form a hypothesis 4. test hypothesis 5.state a conclusioon |
| observation | using the senses |
| dinosaurs dominated the earth for ________ years | 135 million |
| dinosaurs became extinct _____ years ago | 65 million |
| measurement | involves the comparision of some aspect of an object |
| accuracy is in ________ measurements | scientific |
| scientist study _____________ that date back to the dinosaur disaperance | rock layers |
| scientist discovered that in certain locations the rocks that dated back to 65 million years ago contained ________ | iridium |
| iridium | a substance that is uncommon in earth rocks but common in meteors |
| hypothesis | a possible explanation or solution to the problem |
| a hypothesis is based on _____________ | facts gathered |
| dinosaur hypothesis states | that about 65 million years ago a giant meteorite hit the earth impact caused raised enough dust to cover sun's rays |
| experimentation | a scientific procedejure carried out by certain guide lines |
| variable | a factor in an experiment that can be changed |
| controlled experiment | an experiment set up to test a variable |
| compared model | simulating certain conditions |
| scientist determined that a meteor ____ meters in diameter couled suffiecently lower the earth's temperature | 10 |
| how many miles wide is 10 inces in diameter? | 6 miles |
| tektills | natural glass formed by phenominal heat |
| what are the other possible causes for dinosaur extinction | A.volcano b. supernova c.flood d.caterpillarse.climate change |
| hypothesis will be ______,_____,or ________ | accepted, altered, or discarded |
| meteoriote hypothesis | impact hypothesis not proved |
| Gaia | greek godess mother of earth |
| Earth has supported life __________ | 4 billion years |
| gaia means | earth |
| homeostasis | the state of balance that the boy maintains |
| pan means | all |
| pangea means | all earth |
Created by:
4clara
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