Force and Motion - List 3
Force and Motion - List 2
Force and Motion - List 1
- Newton’s First Law (inertia): An object at rest tends to stay at rest while an object in motion tends to stay in motion with the same direction and speed
- Newton’s Second Law (acceleration): It takes more force to accelerate a more massive object
- Newton’s Third Law (action and reaction): Forces are found in pairs; for every action (force), there is an opposite and equal reaction (force)
Force and Motion - List 2
- Wheel and axle: a simple machine made up of a wheel with a rod (axle) through its center that lifts or moves loads
- Inclined plane: a slanted surface
- Lever: a simple machine made up of a stiff bar that rests on a middle support
- Simple machine: a tool that makes work easier, it has few or no moving parts
- Screw: an incline plane that is wrapped around a pole, holds things together and can be used to lift materials
- Wedge: a simple machine that has at least one slanted side that ends in a sharp edge
- Pulley: a simple machine that uses grooved wheels and rope to raise, lower or move a load
- Design: to imagine and create the best way to solve a problem
Force and Motion - List 1
- Speed: A measurement of distance over time.
- Energy: The capacity to do work. It can be used to move muscles, operate machines, cook meals and heat rooms.
- Force: A push or pull on an object.
- Position: The location of an object
- Friction: The force that acts on an object to stop motion.
- Machine: Something that replaces human effort.
- Gravity: The force that pulls things toward Earth.
- Balanced Forces: Forces that have a net force of zero (equal force in opposite directions).
- Unbalanced Forces: Forces that have a net force that is not zero (causes motion).
- Momentum: The product of the mass and velocity of an object.
- Inertia: The tendency of an object to remain at rest or in motion unless it is acted on by a force.