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17 terms

5th Grade Science EOG - 2012 Forces and Motion

Created for EOG prep for CSD students
the location of an object (e.g., when a soccer ball is kicked it moves from its original position to another position)
measurement of distance over time (e.g., how long did it take for the soccer ball to move from its original position to another position)
can be described in terms of position and direction; several tools are used to measure motion for example compass (direction), meterstick (position), stopwatch (time)
push or pull on an object; the motion of an object depends on all the forces acting on it (e.g., drag, lift, thrust)
happens in the opposite direction of thrust to slow an object down
pushes an object up
moves an object forward
Balanced Force
a force that has a net force of zero; balanced forces do not change the motion of objects
Unbalanced Force
occurs when objects move; unbalanced forces change the motion of objects
ability to do work; energy is either potential (store) or kinetic (movement); there are different forms of energy: heat, light, sound, electrical, chemical, mechanical, and nuclear
something that replaces human energy; all machines require energy to do work
the force that pulls all objects on Earth toward the center of the Earth
the tendency of an object to remain at rest or in motion unless it is acted on by a force (e.g., a soccer ball at rest will remain at rest unless a force (such as a kick) is applied to it
is the product of the mass and velocity of an object; all objects in motion have momentum; some objects have more momentum than other objects; momentum is changed by how fast an object is moving (speed) and how much mass (weight and size) that object has (e.g., moving train has much more momentum than a moving soccer ball)
a force that acts on an object to stop its motion or to help it go
imagining and creating the best way to solve a problem
Simple Machine
a tool that makes work easier (e.g., pulley, lever, wedge, wheel, inclined plane, screw)