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Science Final Review
vocabulary words, concepts, and relationships from the past 3 weeks of STC
| Term | Definition |
|---|---|
| Homologous Structures | structures that are similar but have different functions |
| Natural Selection | an organisms develops specific traits or behaviors which allow them to survive and reproduce |
| Mutation | a spontaneous change to an organisms DNA |
| Charles Darwin | The "Father of Evolution" |
| Survival of the fittest | used to describe natural selection. Only the organisms with the best traits will survive and reproduce |
| Evolution | gradual change over long periods of time |
| Adaptation | when an organism or species becomes better suited for their environment |
| Variation | differences in living organisms |
| Over reproduction | when a organisms produces more offspring than can survive in hopes to increase the survival rate |
| Plate tectonics | circulating heat currents in the Earth's mantel that causes the plates to move |
| Sea floor spreading | the process that slowly adds new rock to the ocean floor. Caused by a divergent boundary |
| Boundary | where two plates meet |
| Analogous structures | structures that are different but have the same function |
| Common ancestor | all living things are descendant from a universal ancestor |
| Pangaea | The Supper Continent. Once all the continents where connected to each other |
| Continental drift | what broke up Pangaea. Continents slowly drifted and continue to drift due to plate tectonics |
| Divergent Boundaary | when two plates pull apart from each |
| Transform Boundary | when two plates slide pass each other |
| Convergent Boundary | when two plates come together and collide |
| Crust | the outer most layer of the Earth. Where we live |
| Inner Core | last layer, highest temperature, solid ball of iron, doesn't melt due to high pressure |
| Outer Core | 3rd layer of the Earth, liquid lava, creates Earth's magnetic field |
| Mantle | 2nd layer of the Earth, thick, has 3 section, makes up 85% of Earth's mass |
| When this happens mountains form..... | Convergent Boundary |
| Fish lay thousands of eggs every year....This is..... | Over reproduction |
| Camouflage, is an example of...... | adaptation |
| When this happens fault lines and earthquakes form.... | Transform Boundary |
| Snakes and whales have hip and leg bones.....this is an example of..... | Vestigial Structures |
| When this happens valley and sea floor spreading form..... | Divergent Boundary |
| Which is more dense?.... a continental plate or an oceanic plate | oceanic plate |
| subduction | a convergent boundary, with 2 plates with different densities |
| A cat and a whale both have the same bone structure in their limbs but do different functions........this is...... | Homologous structures |
| Birds, bats, and mosquitoes can all fly, but their wings are made differently.....this is...... | Analogous Structures |
Created by:
bellerm
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