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Science Exam
1st Semester Exam Stack
| Question | Answer |
|---|---|
| What are the three major sections of the Earth? | Crust, Mantle, and Core |
| What is the lithosphere? | The outer-most layer of the Earth that we walk on. |
| What is the asthenosphere? | the "plastic" like layer that the lithosphere floats and moves on. |
| What is the mesosphere? | the strong, inner layer of the Earth |
| What is the outer core? | liquid iron |
| What is the inner core? | Solid Iron |
| What element make up the inner core of the Earth? | Iron |
| What does the material produce that is detectable at the surface? | Magnetic Fields |
| What does a magnet produce that can be detected with iron fillings and compasses at the surface? | Magnetic Fields |
| What direction does a compass point? Why? | North...it is drawn to the South Magnetic Pole |
| Why are some maerials able to be magnetized whild others can't? | Some atoms can aline and others can's. |
| What is the geologic time scale? | A timeline of Earth's history A tool to study Ear's history |
| Why did scientists create the geologic time scale? | To make studying Earth's history easier |
| Name the 4 units of time on the geologic time scale from longest to shortest. | Eon, Era, Period, Epoch |
| Name and tell who ruled 3 eras of Earth's history. | Palozoic(Marine) Mesozoic(Reptile) Cenozoic(Mammals) |
| Which era are we in right now? | Cenozoic |
| What are tectonic plate? | Chuncks of earth that move and fit together |
| What is the theory of plate tectonics? | Plates of the Earth move and fit together |
| What are curents that bring hot materials up ad cooler materials down? | Convection currents do to the tectonic plates |
| What do convection currents do to tectonic plates? | Make them move |
| Name the area where two plates collide. | Convergant Boundries |
| Name the area where plates move away from each other. | Divergaent Boundries |
| Name the area where two plates slide past each other. | Transform Boundries |
| What process creates new ocean floor? | sea-floor spreading |
| Which process creates mountain ranges? | Convergent |
| Which process is the same as sea-floor spreading? | Divergent |
| When plates rub against each other, what occurs? | Earthquake |
| Which boundries resut in earthquakes? | Transform, convergent, divergent |
| If there is a break in the crust, what is created? | fault, volcano, fissure |
| What theory supports the idea that the Earth has changed quickly? | Catastrophism |
| What theory supprts the idea that the Earth has changed slowly? | Uniformitarism |
| How do igneous rocks form? | Magma Cools |
| Name the igneous rock formations inside the crust of the Earth. | Intrusive igneous rock (Dike, Sill, Batholith, Stock) |
| Name the igneous rock formations outside the crust of the Earth. | Extrusive igneous rock (Dike, Volcanic Neck) |
| How do metamorphic rocks form? | Heat & Pressure |
| How do sedimentry rocks form? | Sediment packed together |
| What are three types of sedimentary rocks? | Clastic, Chemical, Organic |
| Which one is made from sediment packed together? | Clastic |
| Which one is made from sediment crystallizing together? | Chemical |
| Which one is made from dead bodies being packed together? | Organic |
| What are the parts of the rock that take place above the surface? | Erosion, Weathering, Deposition, and Solidifaction |
| What are the parts of the rock cycle that take place below the surface? | Compaction and Cementation, Metamorphism, Melting, Cooling |
| What are the 8 parts of the rock cycle? | Erosion, Weathering, Depostion, Solidifaction, Compaction and Cementation, Metamorphism, Melting, Cooling |
| What is the top layer of the soil caled? | Top Soil |
| What is the undweathered rock called that is found below the surface? | Bedrock |
| What ingredients make up the soil? | Sand, CLay, Silt, Water, Air |
| What is the major ingredientin soil? | Rock Fragments |
| What type of particles are found in soil? | sand, clay, silt, water, clay, air, humus |
| Why is infilation important for plants in soil? | They get water and nutrients |
| What is leaching? | Nutrient are washed out of soil. |
| Are all soils nutrient-rich? | No |
| What is another name for soil layers? | Soil Horizons |
| What kind of environment has very rich soil for growing crops? | Temperate Forest and Grasslands |
| What important role do organisms have in keeping soil "healthy" for plants? | They break down the ground and "process" the material(poop) |
| What causes a sinkhole in the Earth? | The ground caves in |
| What happens to the limestone under the surface of the Earth? | It dissolves because of carbonic acid. |
| What causes the caverns and caves in the Earth? | The limestone breaks down and errodes away |
| What does a glacier do to the surface of the Earth? | It moves materials and breaks down rocks |
| What is the currently happening to glaciers of the world? | They are melting. |
| What can happen when a glacier melts? | flooding |
| Was Indiana ever covered by a glacier? | Yes |
| Would you find fossils in metamorphic rock? | No, Too much heat and pressure |
| Name 5 types of enviornments where you could find fossils. | Amber, Asphalt, Sediment, Ice |
| Is there fossil evidence to show that envieronments have changed over time? | Yes |
| What kind of events may have changed Earth's surface over time? | Glaciers, Volcanoes, Earthquakes, Asteroids, Floods |
| What is mass? | How much matter an object has. |
| What is volume? | How much space an object takes up |
| What is density? | How much matter is in a given volume D=M/V |
| What is weight? | how much gravitaional force pulls on an object |
| What are the units of mass? | Grams or Kilograms |
| What are the units of volume? | Cm cubed for a solid/ mL or Liters for liquids |
| What are the units of density? | Grams per cm cubed |
| What are the units of weight? | Newtons |
| What instruments are used to measure each property? | Mass- Triple Beam Balance Volume-Graduated Cylinder(liquid)or Ruler(solid) Density- Triple Beam Balace & graduated cylinder or Ruler Weight- spring scale |