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25 Cards in this Set
- Front
- Back
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A general plan based on methodical observations and experiments.
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Scientific Method
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What is the first step of the scientific method?
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State your hypothesis.
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After a series of observations and experiments a hypothesis may turn into a...
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Theory
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T/F
A theory is a fact. |
False
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A set of hypothesis and theories become a...
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Scientific Model
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A set of hypothesis that has survived repeated challenges and accumulated a sustantial body of experimental support can be elevated to the status of a...
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Theory
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A precise representation of how a natural system is built or should behave.
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Scientific Model
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How old is the universe?
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1.5 billion years old
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How old is our solar system?
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4.5 billion years old
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How many planets are their?
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9
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Our solar system consists of what?
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The sun and the 9 planets orbiting it.
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Name the two groups of planets.
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Jovian and Terrestrial
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The group that consists of small, rocky, dense planets is...
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Terrestrial
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Which planets are considered terrestrial?
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Venus, Mars, Earth, and Mercury
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The group of planets that are large, gasey, and light
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Jovian
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Jovian planets consist of...
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Saturn, Jupiter, Uranus, Neptune
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Which planet can be described as a small snowball of methane, water, and rock?
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Pluto
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Our solar system formed from...
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A nebula of gas and dust undergoing accretion.
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What is gravitational attraction: the larger a body, the more dust and gas it pulls in.
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Accretion
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What are the reasons earth warms uP rapidly?
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Accretion - Collisional Heating, Compression - the inner layers get heated, Decay - of radioactive materials inside earth.
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T/F
Rocks are very good conductors of heat. |
False
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Does the earth have layered or uniform composition.
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Layered
Earth began in uniform composition. |
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What is the mantle made of?
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Different types of solid rock.
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Working from outer layer, name the layers of the earth.
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Crust, Lithosphere, Asthenosphere, Mantle, Core
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The crust is what percentage of the earth's mass?
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.4%
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