Circuits
What is an electric charge?
Objects become positively charged when they lose electrons and negatively charged when they gain electrons; objects with like charges repel and objects with opposite charges attract.
Define a wave.
a disturbance that carries energy from one location to another location.
What is kinetic energy?
It is the energy of motion.
What is energy.
Means the ability to do work.The SI unit for energy is Joules ( J ); same as work.
What is weight?
It is a measure of gravitational force on an object (changes with location).
Faster Moving Electric Charges (Electrons)
What are the two types of mechanical waves?
Transverse waves and Longitudinal waves
Define a solid.
It is a matter with a definite shape and definite volume. Solids hold their own shape, have weight, & take up space.
What is potential energy?
is stored energy due to an object’s position--energy ready to go.
What is mass?
amount of matter in an object (does not change with
gravity).
Explain what a circuit does.
Control the movement of electric current by providing paths for electrons to follow.
What is a medium?
It is a substance or material that carries the wave. It is made up of matter, which is a solid, liquid, or gas.
What is a liquid?
It is matter that has a definite volume but no definite shape. Liquids takes the shape of the container; however, the volume is the same.
What is elastic potential energy?
The energy is stored in elastic materials as the result of their stretching or compressing.
Define acceleration.
the rate at which velocity changes or the rate in which you speed up, slow down, or change directions.
It is the potential difference between two points in a circuit.
Explain what a mechanical wave is.
requires a medium in order to transport their energy.
Define gas.
It is matter that does not have a definite shape or volume. The particles in gas are much farther apart than those in a liquid or solid.
What is gravitational potential energy?
Potential energy that is related to an object's
height above the ground.
Define gravity.
the force of attraction between all objects in the universe.
Define resistance.
It is how difficult it is for electrons to flow through a material (friction).
Explain what a transverse wave is.
medium moves in a direction perpendicular to the direction that the wave moves.
Define plasma.
It is a state of matter that starts out as a
gas and becomes ionized. Used in fluorescent light bulbs and Neon lights.
What is kinetic energy?
is energy of motion.
What is velocity?
The speed of an object in a particular direction.