Term
| What are we searching for? (chapt.1) |
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Definition
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Term
| What three areas frame the context of the scientific search for Life? |
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Definition
| Astronomy, Biology, Planetary Science |
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Term
| How does astronomy help us understand the possibilities for extraterrestrail life? |
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Definition
| By studying distant objects |
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Term
What does geocentric mean?
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Definition
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Term
How does planetary science help us understand the possibilities for extraterrestrial life?
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Definition
| Learning how planets form; habitable planets |
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Term
| What are extrasolar planets? |
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Definition
| Planets that orbits stars other than our Sun |
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Term
| What are habitable worlds? |
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Definition
| Contains the basic necessities for life |
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Term
| How does biology help us understand the possibilities for extrarterrestrial life? |
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Definition
| No evidence shows life beyond Earth, so we do not know if Biology is common in other worlds |
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Term
| What are the three lines of evidence that Biology suggest that life could be common? |
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Definition
1. evidence that organic molecules form eaily and naturally
2. evidence that life appeared early in the history of Earth
3.evidence that earth life can survive under a wide range of conditions |
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Term
| Where should we search for life in the universe? |
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Definition
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Term
| What two are the most promising canidates for life other than Earth? |
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Definition
| Mars and Jupiters Moon-Europa |
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Term
| What is crucial to all life on Earth? |
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Definition
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Term
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Definition
| The study of life in the Universe |
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Term
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Definition
| large collection of stars |
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Term
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Definition
| group of galaxies within a galaxy |
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Term
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Definition
| Ball of gas made up of hydrogen and helium |
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Term
| Anything that orbits a planet is? |
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Definition
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Term
| Anything that orbits a star is? |
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Definition
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Term
| Anything that orbits a sun is? |
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Definition
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Term
| What two planets are bigger than Earth? |
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Definition
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Term
| Is the sun bigger than earth? |
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Definition
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Term
| What is the geocentric model? |
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Definition
| The earth is centered at the center of a great celestial sphere |
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Term
| What direction is apparent retograde motion? |
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Definition
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Term
| What is the Ptolematic model? |
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Definition
| the model shows planets moving in a retrograde motion around the Earth in small circles that turned around larger circles |
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Term
| Which model was Aristole? |
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Definition
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Term
| Why did the Greeks argue about the possibility of life beyond Earth? |
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Definition
| some believed the world was infinite and some said like Aristole that the world fell into the universe and is seperate from the heavens and earth |
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Term
| What does the Copernicus tells us? |
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Definition
| that the geocentric layout for the solar system is the Sun is centered |
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Term
What contribution did Tycho Brahe developed?
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Definition
| a large naked eye observatories that worked as a large protractor |
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Term
| What was the contribution of Kepler (3 planetary laws)? |
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Definition
1. planet distance from sun varies its orbit
2. planet moves faster when its near the sun and slow when its away from the sun
3.distant planet orbit the sun at a slower average |
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Term
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Definition
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Term
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Definition
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Term
| What are the Hallmarks of Science? |
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Definition
Hallmark 1.-seeks explanations for observed phenomena that rely soley on natural causes
Hallmark 2.-progresses through creation and testing of models
Hallmark 3.-makes testablee predictions about natural phenomena |
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Term
| Steps of Scientific Method |
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Definition
1. make an observation
2. ask question
3. suggest hypothesis
4. make prediction
5. perform test |
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Term
What are the three major lesson astronomy teaches us about our placee in thte universe?
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Definition
1. unverise is vast and old
2.elements of life is widespread
3. same physical laws that operate on earth operate throughout the universe |
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Term
| What are terrestrial planets? |
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Definition
| planets of metal and rock (earth is one of them) |
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Term
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Definition
| Made up of hydrogen,helium,and hydrogen compounds(water,methane, and ammonia) |
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Term
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Definition
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Term
| What are the six properties that living organism on Earth share? |
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Definition
1.order
2.reproduction
3.growth and development
4. energy utilization
5.response to the enviornment
6. evolutionary adaption |
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