Introduction to Energy Flashcards
A push or a pull is known as _____.
force
Using force to move an object is the definition of _____.
work
The ability to do work is called _____.
energy
The type of scientist who studies force, motion, and energy is called a _____.
physicist
The total amount of energy in the world never changes because _____.
energy cannot be created or destroyed (but it can change from one form to another)
The energy stored in an object because of its position or state is called _____.
potential energy
The energy of an object in motion is called _____.
kinetic energy
What two things change the amount of gravitational potential energy in an object?
mass and height
What two things affect the amount of kinetic energy in an object?
mass and velocity (speed)
What kind of potential energy is stored when materials stretch or compress?
elastic potential energy
What kind of potential energy is stored in an object that is in a position to fall?
gravitational potential energy
What kind of potential energy is stored in the bonds between atoms?
chemical energy
What science word defines the speed and direction of motion?
velocity
What are two possible results when two objects collide?
Their energy is either transferred (moved to the other object) or transformed (changed into another form of energy).
What kind of energy is stored in the nucleus of atoms?
nuclear energy
What kind of energy results from molecules in motion inside an object?
thermal energy
What kind of energy is stored in a magnetic field from tiny electric charges inside a magnet?
magnetic energy
What kind of energy can travel through empty space as waves?
radiant energy
What kind of energy results from moving electric charges?
electrical energy
What kind of energy does an object have because of its motion or position?
mechanical energy
What happens when energy is transferred?
It is moved from one object to another. (Example: A bowling ball transfers its kinetic energy to the bowling pins when it hits them.)
What happens when energy is transformed?
It changes into a new form of energy. (Example: Electrical energy changes into light energy when you turn on the light switch.)
What does the law of conservation of energy say?
Energy cannot be created or destroyed, but it can change from one form to another.
