A change of velocity over time.
Acceleration
a wave vibrating in the same direction that the energy moves.
Longitudinal Wave
Organ in the nervous system that interprets messages received from and sends messages to other body organs.
brain
A path through which electric current can flow.
Circuit
A trait that helps a living thing survive in its environment.
Adaptation
A push or pull.
Force
A substance through which waves travels.
medium
A part of the nervous system made up of the brain and spinal cord.
Central nervous system
A material through which energy flows easily.
conductor
A reaction to a stimulus.
Reponse
A force between surfaces that slows objects or stops them from moving.
friction
a device that uses light from the sun to produce electricity.
Solar cell
The process of finding an object by using reflected sound.
Echolocation
A flow of electricity through a conductor.
electric current
Something in the environment that causes an action.
stimulus
the tendency of an object in motion to stay in motion or of an object at rest to stay at rest.
Interia
A wave that transfers energy through a material and spreads outward in all directions from a vibration.
Sound Wave
The set of organs that uses information form the senses to control all body's senses.
Nervous System
A material that slows or stops the flow of energy such as electricity or sound.
Insulator
The release of water vapor mainly through the small openings on the underside of leaves that drives the movement of material throughout a plant.
Transpiration
The change of an objects position.
Motion
A back-and-forth motion.
Vibration
A thick bundle of nerves inside the spine.
Spinal Cord
An object in an electrical circuit that resists the flow of energy.
Resistor
A plant's response to water, gravity, light, and touch
Tropism