Science Finals (2nd Semester)
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Created by:
ddyyllaann on May 16, 2012
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117 terms
Terms | Definitions |
|---|---|
 watt | resentment of how fast work is done |
| volt | amount electric push |
| ampere | n. The practical unit of electric-current strength. |
| Resister | An electrical device that slows the flow of charge in a circuit |
| Insulator | a machine that changes motion in to electricity |
| Generator | A machine that converts mechanical energy into electrical energy |
| Electrolyte | A substance that dissolves in water to give a solution that conducts electric current |
| Conductor | A material that easily allows the flow of electricity |
| Series Circuit | A circuit in which the objects are connected in a single path |
| Parallel Circuit | Circuit in which electric current can follow more than one path |
| Magnet | Any material that attracts iron and materials that contain iron |
| Integrated Circuit | very small circut |
| Circuit | elictricity can flow |
| Static Electricity | The build up of electric charges on an object |
| Battery | more than one electric cells |
| Electromagnet | Temporary magnet made by passing an electric current through a wire coiled around an iron bar |
| Electronic Device | A piece of medical equipment that delivers intravenous fluids at a prescribed rate through an intravenous catheter |
| Energy | The ability to do work |
| Mass | The amount of matter in an object |
| Mechanical Energy | The total energy of motion and position of an object or ability |
| Motion | An object's change in position relative to a reference point |
| Reference Point | fixed un moving object to tell , A place or object used for comparison to determine if an object is in motion |
| Acceleration | speeds up or stops |
| Force | A push or a pull |
| Friction | The force that opposes the motion of one surface as it moves across another surface |
| Inertia | The tendency of an object to resist any change in its motion |
| Velocity | the distance the object moved in a certain direction |
| Momentum | mass and velocity |
| Fulcrum | The fixed point around which a lever pivots |
| Inclined Plane | A flat surface that is slanted |
| Screw | An inclined plane wrapped around a cylinder |
| Lever | A rigid bar that move around a fixed point |
| Wheel & Axel | wheel and a rod running through it |
| Joule | A unit of workwheel and a rod running through it |
| Compound Machine | A device that combines two or more simple machines |
| Machine | A device that makes doing work easier |
| Effort | Hard work |
| Resistance Force | Force applied by the machine to overcome resistance |
| Kinetic Energy | Energy of motion |
| Potential Energy | Energy stored |
| Sir Isaac Newton | formulated the laws of motion |
| The Laws of Motion | 1. Law of inertia - a object at rest will stay that way unless an outside force acts on it 2. Second Law - a net force of an object causes it to accelerate in the direction of the force 2. third law of motion for ever action for there is an equal and opposite reaction |
| astroid | irregular pieces of rock metal or dust and is sometimes called planets |
| refracting telescope | telescope that uses |
| reflecting telescope | telescope that uses lenses and mirrors to make objects appear larger |
| constellation | group of stars that appear to form pictures and make stars easier to find |
| black hole | super giants star runs out of fuel the cor collapses |
| blue stars | hottest stars |
| pulsars | neutron star that spins rapidly on its axis |
| nova | star that suddenly flares and becomes hundreds of thousands of times brighter than normal |
| supergiants | star that is hundreds of times larger than the sun and thousand of times brighter |
| magnitude | brightness of a star |
| sun | closest start to earth |
| red stars | the coldest stars |
| stars | a glowing ball of gases |
| multiple star groups | star group of three or four stars |
| galaxy | huge star system that contains millions of stars and covers many light years of space |
| comet | icy chunk of frozen gases, water, and dust that orbits the sun |
| binary system | group of 2 stars |
| apparent magnitude | star appears to be |
| light year | distance that light travels in one year |
| astrology | belief that the star is life |
| aurora | light show near earth poles that is caused by solar solar wind |
| neil armstrong | first man to walk on the moon |
| probe | unmanned spacecraft for research |
| satellites | object that rotates around another body in space |
| Mercury | closest planet to the sun |
| venus | the brightest object morning eving sky |
| earth | home sweet home |
| mars | the red planet |
| jupiter | largest planet with a great spot |
| Saturn | ringed planet |
| uranus | the planet thsat rotates sideways |
| neptune | blue planet |
| pluto | smallest planet |
| chromosphere | atmosphere of the sun |
| corona | outermost part of the sun |
| photosphere | surface of the sun |
| sunspots | dark spot on the surface of the sun |
| rotation | turn of the planet one time |
| revolution | planet to turn the one time |
| equinox | the equal length of day and night |
| rotation | turn of a planet around its axis |
| revolution | orbit around a point |
| zygote | fertilized egg |
| spores | one cell reproduction system that does store food for the new plant |
| parts of the seed | ... |
| pollination | ... |
| stamen | male part of the flower a thick stalk with a knoblike structure |
| pistil | female part of the flower located in the center of the flower |
| sepals | flower part that protects a developing flower bud until its ready to open |
| style | long slender stalk that connects the ovary to the top of the pistil |
| angiosperms | vascular plant that has flowers and protect its seeds inside a fruit |
| gymnosperms | vascular plant that does not have flowers and that usually produces its seeds inside a cone, with only the seed coat for a protective coating |
| fruit | part of the plant that contains the seed |
| marsupial animals | mammal that has a pouch where the young finish developing |
| placental animals | mammal whose young develop inside the mother's body |
| gestation | time between the fertilization and birth of an animal or human |
| asexual reproduction | process of reproducing from only one parrent |
| DNA | chemical code held by chromosomes that tells the cells what to do |
| genes | small piece of DNA |
| heredity | passing of traits from parrents to offspring |
| traits | inherited physical characteristics |
| genetics | ... |
| double helix | ... |
| purebred | organism that is the offspring of parrents having the same genetic makeup |
| hybrid | plant produced by crossing parent plants that have 2 different forms of the same gene |
| recessive traits | gene that is hidden when a dominant gene is present |
| co-dominant traits | expression of both genes instead of one being recessive while the other one is recessivr |
| gregor mendel | ... |
| phenotype | physical appearance of an organism |
| genotype | genetic makeup of an organism |
| pedigree | chart that traces a particular trait through many generations |
| punnet squares | diagram used to show the probability of certain genetic traits for the offspring of any 2 parents |
| genetic energy | changing a gene or moving some of one organisms genes into another organism |
| olfactory nerve | ... |
| optic nerve | ... |
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