SCEINCEQ3

• STATIC FRICTION -prevents 2 objects from sliding against each other
• KINETIC FRICTION - when objects slide agains each other
• LAW OF INTERACTION - when body A exerts a force on body B, body B exerts an equal force on body A
• MASS - shows how much inertia an object has
• Force is measured in?

  newton and dyne
• ACCELERATION - measure of how fast the velocity of an object changes
• LAW OF ACCELERATION - if a net force is acting on an object, it will accelerate in the direction of the net force.
• LAW OF ACCELERATION - The magnitude of the acceleration is directly proportional to the net force and inversely proportional to the objects mass.
• RESULTANT FORCE - When all of the forces are parallel to each other
• LAW OF INERTIA - An object at rest remains at rest and an object in motion remains in motion as long as there is no force acting on it.
• INERTIA - the tendency of an object to keep doing what it is already doing.
• EQUILIBRIUM - when all of the forces acting on an object balance each other out.
• CONTACT FORCES - require objects to be touching
• NONCONTACT FORCES - action at a distance forces.
• TENSION - pulling force exerted on a rope, string, or chain.
• NORMAL FORCE - when things touch or collide.
• WEIGHT - pull of gravity
• FORCE - a push or pull
• FORCE - is a vector
• FORCE - may be contact or non contact
• DISTANCE - a measure of how far a point is from another point
• REFERENCE POINT - used to describe and measure the change in point.
• DISPLACEMENT - the change in poition of an object with respect to its initial position
• SCALAR QUANTITY
• SCALAR QUANTITI - a quantity specifies only only magnitude or size and distance
• VECTOR QUANTITY - specifies both magnitude and direction.
• WORK - a measure of how a force is capable of moving an object or in causing a displacement.
• W = fd
• 2 TYPES OF ENERGY - KINETIC AND POTENTIAL
• 2 TYPES OF POTENTIAL ENERGY - GRAVITATIONAL AND ELASTIC
• FORMS OF ENERGY - MECHANICAL, CHEMICAL, RADIANT/LIGHT, THERMAL, SOUND, ELECTRICAL, NUCLEAR.
• SOUND IS PRODUCED BY - VIBRATION
• PITCH - HIGHNESS AND LOWNESS
• FREQUENCY - NUMBER OF VIBRATION
• HERTZ - UNIT OF SOUND
• WAVELENGTH - THE LONGER THE WAVE THE LOWER THE FREQUENCY, THE SHORTER THE WAVE THE HIGHER THE FREQUENCY
• VOLUME - LOUDNESS AND LOWNESS
• INTENSITY - AMOUNT OF ENERGY/POWER
• DECIBEL - UNIT OF MEASURE OF VOLUME
• REFRACTION - BEND OFF