Second 9 weeks Review words 103 - 176
About this set
Created by:
mrslonglwe on January 2, 2012
Subjects:
Description:
Mrs. Long, LWE, Science, 5th grade
Log in to favorite or report as inappropriate.
Order by
74 terms
Terms | Definitions |
|---|---|
 Axis | An imaginary line that passes through Earth's center and its North and South Poles |
| Axis Tilt | the 23.5 degree tilt on Earth's axis, reason why we have seasonal changes |
| Rotate | The spinning of Earth on its axis |
| Solar Arc | the apparent path of the Sun across the sky |
| Terminator | sometimes called the twilight zone or "grey line," is a moving line that marks the illuminated day side and the dark night side of a planetary body such as moons or planets. |
| Telescope | A tool for observing distant objects. |
| Impact Crater | A bowl shaped hole that is formed when asteroids and comets collide with the surface |
| Maria | dark, flat areas on the moon's surface formed from huge ancient lava flows |
| Satellite | A natural body, like the moon, or an artificial object that orbits another object. |
| Space Probe | A robot vehicle used to explore deep space. |
| Radiation Zone | the layer of the Sun closest to the core in which energy is transerfered to the outer layer. |
| Convection Zone | Sun's outer layer in which energy is transferred by convection |
| Photoshere | the visable, outer layer of the sun |
| Chromosphere | the gaseous middle layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun |
| Corona | The outer edge of the Sun's atmosphere. |
| Sunspot | A place on the Sun's surface disrupted by a magnetic field that is cooler than its surrounding |
| Promienence | a stream of gas that erupts from the surface of the sun |
| Flare, Solar | A brief burst of energy from teh sun's photosphere |
| Ejecta | Material from beneath the surface of a body such, as a moon or planet, that is ejected by an impact such as, a meteor and distributed around the surface. Ejecta usually appear as a lighter color than the surrounding surface. |
| Eclipse | The passing of one object through the shadow of another |
| Volcano | an opening in Earth's crust through which lava and ash erupt |
| Magma | Liquid, molten rock found below the Earth's surface. |
| Lava | Liquid, molten rock on the Earth's surface. |
| Fault | A place where a break in Earth's crust causes movement. |
| Earthquake | A sudden tremor of Earth's surface caused by movement of the crust and mantle, usually along a fault line. |
| Crust | the outermost, rocky layer of Earth, Sun, or moon. |
| Mantle | the thick layer of rock between Earth's crust and core. |
| Core | the innermost layer of Earth, Sun, or Moon |
| Plate | The rigid blocks of crust and upper mantle rock |
| Celestial body | a natural object in space, such as the sun, moon, a planet, or a star. |
| Revolution | One complete orbit (trip) of a planet around a star or a moon around a planet. |
| rotation | Spinning around a central axis, like a planet, moon, or star. |
| atmosphere | the air that surrounds the Earth. |
| craters | Bowl-shaped structures on the surface of a planet or moon caused by the impact of meteorites. |
| Lunar Cycle | The predictable 29-day cycle of the moon as it orbits Earth and progresses through several phases. |
| Sun | The star that is at the center of our solar system and our source of light and heat for the planets in our solar system. |
| Agent of erosion and weathering | wind, water, ice, and waves are the forces that cause weathering and erosion |
| weathering | The breaking up of earth materials into smaller pieces and wearing away of rock. |
| Erosion | The movement of weathered sediments by water, wind, or ice. |
| Deposition | The process where sediment eroded by wind, water, or ice is dropped in a new place. |
| Delta | soil which is deposited at the mouth of a river, usually in a triangular shape. |
| Canyon | a valley between steep cliff sides formed by running water, such as a river or stream |
| Sand Dune | a hill of sand created by the wind |
| Striation | Grooves of scratches found in surface rock that are the result of glacial abrasion |
| Glacier | A large mass of slowly moving ice and snow that carves new features and deposits sediments |
| Landform | A natural geographic structure on Earth's surface. |
| Fossil | Evidence of ancient past life, such as petrified wood, dinosaur |
| Paleontology | a scientist (paleontologist) who studies ancient life using fossils |
| MYA | Million of Years Ago |
| Prehistoric | before recorded history |
| Extinction | death of an entire species. |
| Mass Extinction | Extinction on a large scale, such as the extinction of the dinosaurs. |
| Alternative energy | Energy sources that do not come from fossil fuels. A renewable or inexhaustible resource. |
| Hydroelectric energy | The capture of energy from moving water for a useful purpose; an alternative energy source. |
| geothermal energy | Heat from the center of the earth that is used as an energy source, come to the surface in the form of volcanoes, fumaroles, hot springs and geysers. |
| biofuels | are often made from crops that can be replanted or organic waste matter, that is constantly replenishing itself. The most popular type is ethanol. |
| wind energy | a form of solar energy, due to uneven heating of the atmosphere by the sun, that converts the kinetic energy of wind into mechanical power. |
| solar energy | The process of obtaining useful energy from the Sun via solar panels. An inexhaustible resource. |
| Nuclear power | the use of controlled nuclear reactions to produce steam, which in turn drives turbines to produce electricity |
| Nonrenewable | Resources that takes longer than a person's life time in order to make. Nature cannot replace quick enough to meet people's needs. |
| Renewable | Resources that nature can provide again and again in a relatively short period of time. |
| Inexhaustiable | Resources that are never used up as they are being used. |
| Windmill | An engine powered by the wind designed to produce energy from an inexhaustible source. |
| Sediment | Solid fragmented material, such as silt, sand, gravel, chemical precipitates, and fossil fragments, that is transported and deposited by water, ice, or wind or that accumulates through chemical precipitation or secretion by organisms, and that forms layers on the Earth's surface. |
| Sedimentary Rock | Rock that formed when sediments were pressed and cemented together |
| Fossil Fuel | Fuels formed millions of years ago from the remains of dead plants and animals, including coal, oil, and natural gas. (Can be remembered by using F.F. C.O.N. = Fossil Fuel Coal, Oil, Natural Gas) |
| Coal | A dark-brown to black solid substance formed from the compaction and hardening of fossilized plant parts in the presence of water and in the absence of air. |
| Oil | A liquid produced from organic matter under pressure for millions of years. |
| Natuarl Gas | A gaseous fossil fuel, methane, produced from organic matter that is used to cook and heat homes |
| F.F. C.O.N | This is an acronym for (F)ossil (F)uel - (C)oal, (O)il, (N)atural gas |
| M. & M. | A way to remember the resource Minerals and Metals |
| Compaction | closely packed together; dense |
| Cementation | Binds particles together |
| Layer | Sediment on top of older sediment and pressed together. |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.