Matter
A combination of two or more substances
Mixture
A push or a pull
Force
A change in velocity
Acceleration
An objects location
Position
The point that a lever moves around
Fulcrum
Moving a object a certain distance is called doing ________________
Center of bones. Makes blood cells and stores fat
Bone marrow
A group of neurons is called a ___________________
Nerve
The substance being dissolved
Solute
The force that resists the movement of surfaces that are touching
Friction
A force whose sum is zero
Balanced force
The distance an object moves in a given amount of time
Speed
Input force
A simple machine that is also called a ramp
This muscle is only found in the heart
Cardiac muscle
A special kind of nerve cell found in sense organs
Receptors
The substance doing the dissolving
Solvent
The force that pulls objects together based on mass
Gravity
A change in the position of an object
Motion
A force whose net sum is not zero
Unbalanced force
A bar that turns around a fixed point
Lever
A simple machine made by wrapping an inclined plane around a rod
Screw
Flexible cushion between bones
Cartilage
An involuntary response to stimuli in the environment
Reflex
A mixture in which the substances are easily spread out
Solution
An object that attracts certain metals
Magnet
The sum of all forces acting on an object
Net force
Speed in a given direction
Velocity
The force applied by a machine
Output force
A simple machine made of two inclined planes
Wedge
Place where two or more bones meet
Joint
This transmits messages between the brain and the body
Spinal cord
The noncontact force that exists between magnets and certain other materials
Magnetism
Amount of forced is measured with this unit.
The force needed to accelerate a 1 kg mass by 1 m/s
Newton (N)
A tool that has few moving parts
Simple machine
A simple machine made of a rope and a wheel with a groove
Pulley
Bones that make up the spine (backbone)
Made of the brain and spinal cord
Central Nervous System
A machine made of two or more simple machines
Compound machine
A simple machine made with a rod that goes through a wheel
Wheel and axle
The unit of structure of the nervous system
Neuron
Made of the sense organs and nerves in the body
Peripheral Nervous System