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Definition
| a way of learning about the natural world by gathering information. |
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| using one or more senses to gather information. |
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| are descriptions that don't involve numbers or measurements. |
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| Quantitative Observations |
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| measurements (ei. height or weight) |
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| When you explain your observations |
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| making a forecast of what will happen in the future based on past experiences or evidence |
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| the study of properties of matter and how matter changes |
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| the study of matter and energy and how they interact |
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| refers to the different ways scientists study the natural world |
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| a possible answer to a scientific question or explination for a set of observations |
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| factors that can change in an experiment |
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| the variable that is changed |
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| the variable that is expected to change because of the manipulated variable is the responding variable |
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| an investigation in which all variables except one remain the same |
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| are the facts, figures, and other evidene gathered through observations |
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| sharing ideas and conclusions with others through writing and speaking |
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| a statement that describes what scientists expect to happen every time under a particular set of conditions. |
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| a well tested explanation for a wide range of observations or experimental results. |
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| a way of changing the natural world to meet human needs or solve problems |
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Definition
| someone who is trained to use both technological and scientific knowledge to solve practical problems |
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| a process in which group remembers freely suggest any creative solutions that come to mind |
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| any factor that limits or restricts a design |
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| a working model used to test a design |
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| analyzing a design problem and finding a way to fix it |
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| made of parts that work together |
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| if its distance from another object is changing |
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Definition
| a place or object used for comparison to determine if something is in motion |
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| International System of Units |
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Definition
| scientists all over the world use the same system of measurement so that they can communicate clearly |
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Definition
| the distance the object travels per unit of time |
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| divide the total distance traveled by the total time |
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| the rate at which an object is moving at a given instant time |
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Definition
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| at the rate at which velocity changes |
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| Equations for Acceleration |
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Definition
Final speed- Initial speed
_____________________
Time |
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Definition
| The combination of all forces acting on an object |
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| Causes an object to start moving, stop moving, or change direction |
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Definition
| Equal forces acting on one object in opposite directions |
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Definition
| The force that 2 surfaces exert on each other when they rub against each other |
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Definition
| The friction that acts on objects that are not moving |
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Definition
| When two solid surfaces slide over each other |
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Definition
| When an object rolls across a surface |
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Definition
| When a solid object moves through a fluid |
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Definition
| A force that pulls objects toward each other |
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Definition
| A measure of the amount of matter in an object |
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Definition
| The force of gravity on a person or object at the surface of the planet |
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Definition
| When the only force acting on an object is gravity |
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Definition
| A Fluid friction that is exerted on and object when it is falling through the air |
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| The greatest velocity a falling object reaches |
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| The tendency of an object to resist a change in motion |
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Definition
Net force
_____________
Mass |
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Definition
| A characteristic of a moving object that is related to the mass and the velocity of the object |
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Term
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Definition
Mass
___________
Velocity |
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| Law of Conservation of Momentum |
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Definition
| In the absence of outside forces, the total momentum of objects that interact does not change |
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Definition
| Any object that orbits another object in space |
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Definition
| Any force that causes an object to move in a circular path |
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Definition
| When you exert a force on an object that causes the object to move some distance |
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Term
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Definition
Force
__________
Distance |
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Term
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Definition
| One joule is the amount of work you do when you exert a force of 1 newton to move an object a distence of 1 meter |
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Definition
| The rate at which work is done |
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Definition
Work
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Time
or
Force x Distance
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Time |
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Definition
| A device that allows you to do work in a way that is easier or more effective |
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Definition
| The force you exert on a machine |
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Definition
| The force the machine exerts on an object |
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Definition
| The input force times the input distance |
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Definition
| The output force times the output distance |
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Definition
| The number of times a machine increases a force exerted on it |
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| Formula for Mechanical Advantage |
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Definition
Output Force
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Input Force |
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Definition
| Compares the output work to the inout work |
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Definition
Output work
_____________________ x 100%
Input work |
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Definition
| The ability to do work or cause change |
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Definition
Energy transfered
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Time |
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Definition
| The energy an object has due to its motion |
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| Formula for Kinetic Energy |
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Definition
Mass
1/2 x ____________
Velocity^2 |
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Definition
| Stored energy that results from the position or shape of an object |
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| Gravitational potential energy |
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Definition
| Potential energy related to an object's hight |
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| Formula for Gravitayional Potential Energy |
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Definition
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Definition
| The potential energy associated with objects that can be streched or compressed |
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Definition
Mechanical
Thermal
Electrical
Chemical
Nuclear
Electromagnetic |
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| Formula for Mechanical energy |
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Definition
| Potential energy x Kinetic energy |
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Definition
| A change from one form of energy to another |
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| Law of Conservation of energy |
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Definition
| When one form of energy is transformed to another, no energy is destroyed in the process |
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Definition
| Anything that has mass and takes up space |
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Definition
| The buildup of charges on an object |
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Definition
| the transfer of electrons from one uncharged object to another by rubbing |
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Definition
| The transferof electrons from a charged object to another object by direct contact |
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Definition
| The movement of electrons to noe part of an object that ios caused by the electric field of a second object |
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Definition
| The loss of static electric charges transfer from one object to another |
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Term
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Definition
| the continuous flow of electric charges thrpugh a material |
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Term
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Definition
| A complete, unbroken pth through which electric charges can flow |
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Definition
| a material through which charges can flow easily |
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Definition
| A material through which charges can not floow easily |
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Definition
| The diference in electrical potential energy between 2 places in a circut |
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Term
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Definition
| the measurment of how dificult it is for chrages to flow through a material |
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Term
| formula for Resistance and Voltage |
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Definition
R= Voltage
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Current
V= Cureent x Resistance |
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Term
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Definition
| The relation between resistance, voltage, and current |
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Term
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Definition
| If all parts of an electric circut ar econnected one afetr another along one path |
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Definition
| a device used to measure current |
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Definition
| The different parts of the circut are on seperate branches |
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Definition
| a device used to mesure voltage, or electrical potential energy difference |
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Definition
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Definition
| a connection that allows current to take the path of least resistance |
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