Force & Motion 1
A push or a pull
What is a force?
This force causes a thrown baseball to fall back to the Earth
What is gravity?
Energy that is stored in an object; the energy of position
What is potential energy?
Charges or poles that attract each other
What are unlike/opposite charges or poles?
A radio plugged into an outlet is this energy transformation
What is electrical to sound energy?
A force that opposes motion of two surfaces through direct contact
What is friction?
A force that moves an object away from the source of the force
What is a push?
Energy of motion
What is kinetic energy?
Charges or poles that repel each other
What are like/same charges or poles?
A stove is used to cook pasta through this energy transformation
What is electrical to thermal/heat energy?
Forces that are equal in size but in opposite directions; no motion
What are balanced forces?
A force that moves an object toward the source of the object?
What is a pull?
Energy that travels as waves
What is sound energy?
Material that allows heat or electrical energy to flow through it easily (ie. copper, metal, steel, iron)
What is a conductor?
A ceiling fan cooling off a room is this energy transformation
What is electrical to machanical?
Forces that are unequal in size and may or may not be in opposite directions; creates motion
What are unbalanced forces?
Force is measured in this unit
What are Newtons?
Energy that causes a change in temperature
What is thermal/heat energy?
Material used to reduce or prevent the transfer of heat, electricity, or sound (ie. rubber, foam, glass, wood)
What is an insulator?
A battery operated car is this energy transformation
What is chemical to mechanical energy?
A tool that makes work easier (ie. pulley, lever)
What is a simple machine?
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an outside force
What is Newton's First Law of Motion (Inertia)?
Energy sources that cannot be replaced in our lifetime
What are nonrenewable resources?
An electric circuit has a switch, copper wire, and a light bulb. It also needs ______ in order to work.
What is a battery or power source?
Blow drying your hair is this energy transformation
What is electrical to mechanical and thermal/heat energy?