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Midterm Review B
Review for midterm Part B
Question | Answer |
---|---|
the idea that older rocks lie beneath younger rocks | Principle of Superposition |
a fossil that lived during one geologic time period | index fossil |
fracture or crack in the earth's crust | fault |
the measure of the time it takes for one half of a radioactive substance to decay | half-life |
Name 3 things used to create the geologic time scale | rocks, fossils, and ice cores |
rocks formed from the cooling of magma and lava | igneous |
What does radioactive dating tell you? | absolute age of rocks & fossils |
best method to date human remains | Carbon-14 |
the removal and movement of sediment from one place to another | erosion |
rocks formed from heat and pressure | metamorphic |
The fact that S. America and Africa appear to fit together like puzzle pieces supports the idea of __ | continental drift (plate tectonics) |
What do ice cores allow scientists to do? | study the Earth's past climate |
the laying down of sediment by a river will form ___ rock | sedimentary |
produced when plates collide | mountains |
Which element is found in all living things? | Carbon |
Name at least one condition necessary for fossils to form. | quick burial or the presence of hard parts |
process that occurs to allow magma/lava to form igneous rock | cooling |
Which type of elements are good conductors of heat? | metals |
What type of change is represented by boiling, freezing, and melting? | physical change |
calculating the age of rocks according to their position | relative dating |
What type of element is most likely to react with a metal? | nonmetal |
group of elements with a full outer shell | noble gases |
elements found along the zig-zag line on the periodic table | metalloids |
used to show a chemical reaction | chemical equation |
On which side of the periodic table will you find the metals? | left |
A ship floating on the ocean demonstrates the property of ___. | density |
A change in which the identity of the matter is changed and a new substance is formed. | chemical change |
What is added to a chemical equation to balance it? | coefficients |
the ingredients in a chemical reaction | reactants |
the substance(s) formed during a chemical reaction | product |
the number of protons plus the number of neutrons | atomic mass |
largest group of metals - they have a wide variety of properties | transition metals |
chemical shorthand for a molecule or compound | formula |