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Definition
| the act of soaking up something such as heat, water, light, and vibrations |
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| the rate at which velocity changes;an object can acccelerate by changing speed OR by changing direction |
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| final velocity minus starting velocity divided by the total time |
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| a graph that shows an objects change in speed over time; time is the independent variable, so it goes on the X axis, & speed is the dependent variable, so it goes on the Y axis |
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| the upward force of air on object |
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| a solid whose atoms are not arranged in any particular order |
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| the maximum distance a medium's particles vibrate |
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| angle of incidence & angle of reflection |
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| the angle at which the light rays hit the object, and the equal angle at which they are reflected |
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| the number of protons & neutrons in an atom (electrons are so small, they don't even equal half of a proton's weight. they aren'e counted in an atom's atomic mass) |
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| the number of protons in an atom; also equals the number of electrons in the same atom, when it is stable |
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| the smallest possible component of an element |
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| two forces in opposite directions that are using the same amount of force; objects that are being acted upon by balanced forces will not move |
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| the units of measurement equal to 1(weight-gram,length-meter,liquid-liter) |
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| objects that absorb every color of light, reflecting no colors back |
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| Bohr model for atomic structure |
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| the temperature point at which a substance will melt |
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| the properties of a substance that stay the same no matter how much or how little of that substance you have |
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| a change that alters the shemical structure of a substance, thereby making a new substance |
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| flammability and reacitivity |
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| when light rays are reflected back the opposite direction at the same angle |
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| coefficient, base, exponent |
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| two or more atoms that have chemically bonded together |
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| the ending statement; this is where you state if the results supported your hypothesis & what you would do differently the next time to make the results more reliable |
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| constructive interference |
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| controlled variables (control group) |
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| the group that remains unchanged; the control group is the group that you base your results on to see if there was any change |
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| a chemical bond between two non-metals where electrons are shared |
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| the highest point of a wave |
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| information, facts, or statistics |
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| decimal position and movement |
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| the amount of mass in each unit of volume of an object |
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| dependent variable (responding variable) |
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| the factor being measured in an experiment; the dependent variable always goes on the y-axis of a graph |
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| the ability to be stretched without breaking |
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| a reaction that absorbs heat; feels cold to the touch |
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| a reaction that gives off heat; feels warm to the touch |
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| friction caused when an object moves through a liquid or a gas |
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| when gravity is the only force acting on an object |
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| the number of waves per second |
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| a force resisting motion that occurs when two surface's rub together |
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| an instrument used to measure the mass if an irregularly shaped object |
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| the force of attraction between two objects; gravity is what causes you to fall back to the ground when you jump |
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| independent variable (manipulating variable) |
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| the variable that you change; the independent variable always goes on the y-axis of a graph |
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Definition
| the tendency of an object to resist change in motion or change in rest |
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| a resource that will not run out (at least not in a human lifetime); the sun is the only inexhaustible resource |
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| an educated guess based on observations and facts |
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| a bond between a metal & a non-metal in which electrons are lost by one atom & gained by the other |
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| law of conservation of mass |
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| angle of incidence=angle of reflection |
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| law of universal gravitation |
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Definition
| every object in the universe exerts a gravitational pull on other objects; objects with a higher mass have more gravitational pull than objects with a small mass, & objects that are closer together have more gravitational pull than objects that are farther away: so, objects with large masses that are close together have a lot of gravitational force |
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| a substance that lessons the amount of friction between two surfaces |
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| a substances ability to bend without breaking |
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| the amount of matter in an object |
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| anything that takes up space |
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| a substance that a wave can travle through |
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| the change from the state of being a solid to the state of being a liquid |
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| the temperature at which a substance melts |
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| a system of measurement based on the powers of 10 |
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| the force or speed of an object |
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| an objects change in position over time |
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| the total amount of force being exerted on an object |
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| newton's first law of motion |
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Definition
| an object at rest will stay at rest & an object in motion will stay in motion unless acted upon by an outside force |
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| newton's second law of motion |
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Definition
| an object's force equals it's mass times it's acceleration |
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| newton's third law of motion |
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Definition
| every action has an equal & opposite reaction; forces act in pairs |
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| an act or instance of viewing or noting a fact or occurance for some scientific or other special purpose |
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| anything that does not transmit light |
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| how high or low a note is;pitch depends on the frequency |
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Kilo
Hecto
Deka
Unit(basic)
Deci
Centi
Milli |
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| an issue or something that you want answered; in science, usually by doing an experiment |
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| the curved path an object follows when thrown or projected towards the earth |
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| protons, neutrons,electrons |
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| observations or data that deal with descriptions that cannot be expressed with numbers |
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| observations or data that deal with a number or amount |
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| an object or point that is used to determine whether an object is in motion |
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| when a wave bounces off an object |
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| friction caused by rolling an object on something, usually another object that is shaped like a cylinder |
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| knowledge of the physical or material world gained through observation and experimentation; the process of learning more about the natural world |
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| a phenomenon of nature that has been proven to occur whenever certain conditions are met |
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| a method of research in which a problem is identified, relevant data are gathered, a hypothesis is formulated from these data, and the hypothesis is tested |
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| something that is believed to be true based on multiple experiments |
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| significant figures (digits) |
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| friction caused by sliding one object on another object |
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| the distance traveled by an object over a certain amount of time |
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| a graph showing how far an object travels over the total amount of time it took; time is the independent variable. it goes on the x-axis. the distance is the dependent variable, so it goes on the y-axis |
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| the stored friction between two surfaces |
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| the measurement of how fast an object's particles are moving |
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| when the force of gravity equals the force of air resistance; the maximum velocity an object can reach |
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| a prediction that can be tested |
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| an instrument used to measure the mass of a regularly shaped object |
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| the lowest point of a wave |
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| a pitch that is higher or lower than the human ear can detect |
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| two forces in opposite directions that are not using the same amount of force; objects that are being acted upon by unbalanced forces will move in the direction of the largest force |
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| an objects speed in a specific direction |
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| distance divided by time with the direction the object is moving in added on to the end |
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| one back-and-forth motion of an object |
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| a liquids' resistance to flow |
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| the amount of space an object takes up |
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| the distance between one point of a wave to thesorresponding point on the next wave |
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| the measurement of the force of gravity on an object |
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