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### 62 Cards in this Set

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 What is the speed/ velocity formula? S= d/t or Speed= distance/time What is the formula for acceleration? a= f.v.-i.v. --------- or f= m x a t What is the forula for momentum? p= m x v or momentum= mass x velocity What is the formula for work? w= f x d or work= force x distance What is the formula for power? p= w/t or power= work/ time What is the formula for kinetic energy? k.e.= 1/2(m)x(v) or k.e.= 1/2(mass)x(velocity) What is the formula for gravitational potential energy? g.p.e.= (m)x(9.8)x(h) or g.p.e.= (mass)x(9.8)x(height) What is the formula for density? D= m/v or Density= mass/velocity Endothermic Reaction A chemical reaction that requires heat Exothermic Reaction A chemical reaction in which heat is released to the surroundings Element A substance that cannot be separated or broken down into simpler substances by chemical means Catalyst A subastance that changes the rate of a chemical reaction without being consumed or changed significally Fusion The process in which light nuclei combine at extremely high temperatures, forming heavier nuclei and relasing energy Fission The process by which a nucleus splits into two or more fragments an releases neutrons and energy Beta Particles A charged electron emitted during certain types of radioactive decay, such as beta decay Alpha Particles A positively charged atom that is released in the disintergration of radioactive elements and that consists of two protons and two neutrons Electromagnetic Induction The process of creating a current in a cirquit by changing a magnetic field Magnetic Field A region where a magnetic force can be detected Speed The distance traveled by an object divided by the time interval during which the motion occured Velocity The speed of a object in a particular direction Momementum A quantity defined as the product of the mass and velocity of an object Kinetic Energy The energy of a moving object due to its motion Potential Energy The stored energy resulting from the relative positions of objects in a system Gravitational Potential Energy The potential energy stored in the gravitational fields of interacting bodies Amplitude The maximum distance that the particles of a wave's medium vibrate from their rest position Wavelength The distance from any point on a wave to an identical point on the next wave Reflection The bouncing back of a ray of light, sound, or heat when the ray hits a surface that it doesn't go through Refracion The bending of a light ray as it passes from one substance to another one with a difference in density Contrast an element, a compound, and a mixture An element can't be broken down to anything simpler. A compound can be broken down by heating and electrolysis. A mixture can be broken down by filtration, crystallization, or distillation What is the difference between an endothermic and an exothermic reaction? Endothermic, energy is absorbed (cold) and exothermic, energy is released (heat) Name two things you could do increase the counting rate of a raioactive sample held a certain distance from a Geiger counter. Use a larger sample, or move the counter closer What is the source of the sun's energy? Nuclear fusion H+H= He Where does a bar magnet exert the strongest force? At the poles What is the primary cause of tides on Earth? The Moon's gravitational pull In what phase must the Moon be in for a solar eclipse to occur? New Moon In what phase must the Moon be in for a lunar eclipse to occur? Full Moon Name the six simple machines *lever *inclined plane *pulley *wedge *wheel and axel *screw Why do we see the phases of the moon? As the moon revolves around the Earth the illuminated side of the moon is not always fully visible from Earth What are the phases of the moon in order begining with full moon? Full Moon, Waning Gibbous, Third Quarter, Waning Crescent, New Moon, Waxing Crescent, First Quarter, Waxing Gibbous What type o nuclear reaction is used to generate electricity in nuclear powerplants? Fission Describe divergent boundaries Move apart Describe transforming boundaries Slide apart Descrbe convergent boundaries Move together List the layers of the Earth, in order, from the crust inward. Lithosphere, asthenosphere, outer core (liquid iorn), inner core (soid iron) What is a convection current? Movement due to the difference in density warm air- less dense cool air- more dense Why does the Earth's inner core remaian solid even though it's very hot? Pressure do to the weight of the crust and mantle, is so great that the atoms are forced together as a solid Convection currents occur in which layer of the Earth? Asthenosphere Which is positively charged? *Gamma Ray *Beta Partcle *Alpha Particle Alpha Particle Which is fast moving? *Gamma Ray *Beta Particle *Alpha Particle Beta Particle Which is made up of two neutrons and two protons? *Gamma Ray *Beta Particle *Alpha Particle Alpha Particle (Alpha particles are massive compared to others) Which can easily pass through paper? *Gamma Ray *Beta Particle *Alpha Particle Beta Particle Which has no electrical charge? *Gamma Ray *Beta Particle *Alpha Particle Gamma Ray What flow is current made up of? Electrons What is Newton's First Law? Inertia- Dead cat What is Newton's Third Law? Equal and Opposite- Rocket launch What two factors affect gravitational froce? Size and distance What does a wave carry through matter or space? Energy What type of wave is a water wave? Transverse What type of wave is a light wave? Electromagnetic What type of wave is a sound wave? Longitudinal What is the relationship beween wavelength and frequency? Inverse Define amplitude The greatest distance particles are displaced from their normal resting position in a transverse wave