Midterm Study Material Flashcards
(57 cards)
Mass and Weight
Mass is a measure of the amount of material in an object, weight is the gravitational force acting on a body
Charles’ Law
an experimental gas law that describes how gases tend to expand when heated
Boyle’s Law
the pressure of a gas tends to increase as the volume of the container decreases
Thermal Energy
Something like “energy created by a heat source”
6 simple machines
Wheel and axle, screw, pulley, lever, wedge, gear
1st Class Lever
fulcrum is located on the lever between the effort force and load
2nd Class Lever
load is between the effort and the fulcrum
3rd Class Lever
force is located between the fulcrum and load
Work
work is done if there is a displacement of the point of application in the direction of the force
Newton’s Law of Motion
an object will remain at rest or in uniform motion in a straight line unless acted upon by an external force
Potential Energy
the energy possessed by an object because of its position relative to other objects, stresses within itself, or its electric charge
Kinetic Energy
energy that a body possesses by virtue of being in motion
Specific Gravity
the ratio of the density of a substance to the density of a standard
Theory
ideas intended to explain something
Hypothesis
an explanation made on limited evidence as a starting point for further investigation
SI
the metric system
Precision
the fact of being exact and accurate
Accuracy
the state of being correct or precise
Density
the compactness of a substance
Mechanics
motion and forces producing motion
Kinematics
the motion of objects without reference to the forces that cause the motion
Dynamics
the motion of bodies under the action of forces
Scalar
having only magnitude, not direction
Vector
having direction and magnitude
