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| A substance made of two or more elements chemically combined |
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| A combination of symbols that shows the ratio of elements in a compound |
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| The smallest particle of an element |
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| A measure of the force of gravity on an object |
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| A measure of how much matter is in an object |
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| The amount of space that matter occupies |
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| The measurement of how much mass of a substance is contained in a given volume |
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| The force that holds two atoms together |
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| A state of matter that has a definite volume and a definite shape |
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| A state of matter that has a definite volume but no definite shape |
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| A state of matter with no definite shape or volume |
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| The relationship between temperature and Volume of a gas at a constant pressure;when temperature increases, volume increases |
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| The relationship between the pressure and volume of a gas at a constatnt temperature; when volume increases, pressure decreases |
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| A term used to describe two the relationship between two variables whose graph is a staright line passing through the point (0,0) |
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| A term used to describe the relationship between two variables whose graph forms a curve that slopes downward from left to right |
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| The total energy of a substance's or material's particles due to their movement or vibration |
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| The central core of of an atom containing protons and usually neutrons |
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| Small, positively charged particles in the neucleus of an atom |
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| Small, uncharged particle in the nucleus of an atom |
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| A tiny, negatively charged, high-energy particle that moves in the space outside the nucleus of an atom |
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| A unit of measurement for the mass of particles in atoms |
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| The number of Protons in the nucleus of an atom |
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| A representation of the number of valence electrons in an atom, using dots placed around the symbol of an element |
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| The electrons thata are the farthest away from the nucleus of an atom and involved in chemical reactions |
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| an atom with the same number of protrons and different number of neutrons from other atoms of the same element |
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| The area around an atomic nucleus where an electron will probably be |
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| Elements in the same vertical column of the periodic table;also called a group |
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| A horizontal row of elements in the periodic table |
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| A term used to describe material that can be pounder or rolled into shape |
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| A term used to describe a material that can be pulled out into a long wire |
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| A molecule composed of two atoms |
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| An element in Group 18 of the periodic table |
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| The elements in Group 17 of the periodic table |
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| The attraction between two oppositely charged ions. |
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| A chemical bond formed when two atoms share electrons |
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| A place or object used for comparison to determine if an object is in motion |
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| The state in which one object's distance from another is changed |
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| The distance an object travels in one unit of time |
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| Speed in a given direction |
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| The steepness, or slant, of a line on a graph |
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| The rate at which velocity changes |
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| A push or pull exerted on an object |
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| A force that one surface exerts on another when the two rub against each other |
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| The tendency of a moving object to continue in a straight line or a stationary object to remain in place |
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| the force that pulls objects toward each other |
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| Equal forces acting on an object in opposite directions |
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| Friction that occurs when one solid surface slides over another |
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| Friction that occurs when an object rolls over a surface |
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| Friction that occurs as an object moves through liquid |
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| A force that causes an object to move in a circle |
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| The product of force and distance when a force is uded to move an object |
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| a unit of work = to 1 newton per meter |
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| Ideal Mechanical Advantage |
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Definition
| the mechanical advantage a machine would have without friction |
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| Actual Mechanical Advantage |
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Definition
| The mechanical advantage a machine provides in a real situation |
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| The percentage of input work that is coverted to output work |
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| a simple machine consisting of a flat surface with one end higher than the other |
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| a simple machine consisting of two circular or cylindircal objects that are fastened together and roattae about a common axis |
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| A simple machine consisting of a device that is thick at one end and tapers to a thin edge at the other |
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| A simple machine consisting of a grooved wheel around which is wrapped a rope, chain, or cable |
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| A simple machine consisting of an inclined plane wrapped around a central cylinder to form a spiral |
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| A simple machine consisting ofa rigid object that ivots about a fixed point |
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| The rate at which one form of energy is converted into another |
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| The ability to do work or cause changew |
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| The energy that is stored and held in readiness |
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| Gravitational Potential Energy |
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| Potential Energy that depends on the height of an object |
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| Kinetic or potential energy associated with the the motion or position of an object |
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| The process of changing one form of enrgy to another |
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| The spinning of Earth on it's axis |
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| The movement of one object around another |
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| The path that Earth takes as it revolves around the Sun |
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| An eclipse that occurs during full moon where Earth blocks sunlight from reaching the Moon |
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| An eclipse occuring during new moon that occurs when the Moon passes directly between the Earth and the Sun and blocks sunlight from reaching Earth |
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| The amount of matter in an object |
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Definition
| The force of gravity on an object |
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| The tendency of an object to resist change in motion |
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| Large round pits on the Moon's surface that was formed by the impacts of meteroids |
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| Dark flat areas on the surface of the moon formed by the remains of Volcanic eruptions over 3 billion years ago |
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| Orbit where a sattelite moves over Earth's equator at the same speed Earth rotates thus it stays over the same place all time |
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| The shape of the planets' orbit it is oval |
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Earth's average distance from the sun
150 million kilometers |
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| When two atomic nuclei combine, forming a larger more massive nucleus, and releasing energy |
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| What some call the surface of the sun it is the inner layer |
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| The middle sphere of the Sun's atmosphere. Also called the color sphere |
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| The end of the corona which is million of charged particles |
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| Electromagnetic Radiation |
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| Energy that can travel through space in the form of waves |
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| Hertzprung-Russel Diagram |
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Definition
| A diagram comparing the absolute brightness, color, and surface temperature of stars |
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| The core of a recently destroyed blue-white star. The size of Earth with as mush mass as the Sun |
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| The remains of high mass stars. They are smaller and denser than white dwarfs |
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| an object with gravity so strong that no object, even light can escape. They are formed when some massive stars die |
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| a huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity |
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