matter in motion
Terms
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- Negative acceleration(when an object slows down) is called?
- deceleration
- Basic force-multiplying machines are called?
- simple machine
- Motion in which the velocity of the moving object does not change.
- uniform motion
- Who has been called the greatest physicist of all time?
- Sir Isaac Newton
- Anything which occupies space and has substance is called?
- Matter
- Motion in which the velocity of the moving object does change.
- accelerated motion
- What does the law of universal gravitation state?
- that a particle of matter in the universe will attract another particle with a force known as gravity.
- The force that a machine helps us overcome is called?
- resistance
- What is done when a force moves an object?
- work
- Devices for doing work is called?
- machines
- What is the measurement of the pull of gravity upon any object?
- weight
- What does the law of conservation of matter state?
- That matter can be neither created or destroyed.
- What is the amount of space a substance occupies?
- volume
- What is the attraction which allows molecules of a different kind of matter to stick together?
- adhesion
- The energy of motion is called?
- kinetic energy
- What is the most basic unit of a substance?
- atom
- What is the quantity of matter of every object?
- mass
- What is the ability to do work called?
- energy
- The rate of doing work is called?
- power
- The type of acceleration experienced by falling objects.
- acceleration of gravity
- What law states that the total mass and energy of the universe always remains the same?
- law of conservation of mass and energy
- What law states that energy can be neither created nor destroyed but can only be transformed from one form to another form.
- law of conservation of energy
- What term is used to define mass per unit volume of a substance?
- Density
- What is the common unit of power in the English system devised by James Watt called?
- horsepower
- What does the theory enables us to determine how much energy is equivalent to a given quantity of matter and vice versa?
- The theory of special relativity
- What is a change in velocity over a period of time called?
- acceleration
- What is the metric unit of work and energy?
- joule
- What is the term for the rate of speed an object travels in one direction?
- Velocity
- The 3 basic forms of matter are?
- solids, liquids, and gases
- The number of times a machine multiplies our effort is called?
- mechanical advantage (MA)
- What is the most versatile simple machine?
- lever
- The metric unit of force and weight is called?
- newton
- What law states that for every action there is an equal and opposite reaction?
- Newton's third law of motion
- The pushing or pulling action of one object on another object is called?
- force
- The resistance caused by moving one object against another is called?
- friction
- The force we apply to a machine is called?
- effort (E)
- What is Newton's second law of motion?
- the accleration of an object is directly related to the strength of he force and inversely related to the object's mass.
- What 2 factors determine the strength of gravity?
- Mass and distance
- The work put into a machine is called?
- work input
- The tendency of matter to stay at rest until force acts upon it.
- inertia
- Name the six simple machines:
- lever, the wheel and axle,the inclined plane, the wedge, and the screw
- What law states that the work put into a machine is equal to the work received from the machine?
- law of work
- The work received from the machine is called?
- work output
- The principle of inertia which states that the velocity of an object is not changed unless it is acted upon an outside force is called?
- first law of motion
- The end of a first-class lever to which the effort force is applied is called?
- effort arm
- The end of a first-class lever which moves the resistance is called?
- resistance arm
- What is the pivot point on which the beam rests?
- fulcrum
- The 3 types of a pulley are:
- fixed, movable, and block and tackle
- What is a simple machine that consists of a rope and a grooved wheel?
- pulley
- The only state of matter that has a definite shape and occupies a definite amount of space is?
- solid
- What is the force that an object exerts due to its inertia as it resists change in direction?
- centrifugal force
- What is centripetal force?
- The force pulling an object inward toward the center of a curving path.
- The energy of motion or have potential of motion is called?
- mechanical energy
- What is the attraction that allows molescules of the same kind of matter to stick together?
- cohesion
- The study of matter and energy is called?
- Physics
- What is potential energy?
- Stored energy that can be released to cause motion.
- What are atoms made of?
- molecules