Objects Move and Collide
Interacting Objects
Objects that affect one another
Potential Energy
The ability to do work
Charged Object
Matter with a surplus or deficiency of electrons
Kinetic Energy
Energy of motion
Gas
A state of matter with indefinite volume and shape
Mass
A measure of how much matter is present in a substance
Galaxy
A large grouping of stars in space
Magnetism
A force that attracts or repels objects toward or away from each other; caused by electrons in a substance
Dust
Tiny particles of matter floating in space; condense under gravity to form stars and planets
Net Force
The sum of all the forces acting on an object
Having the tendency to pull other objects toward itself
Attractive
Solar System
A star and the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it
A directional flow of electrical charge through an object or medium
Current
Electric Force
Attractive or repulsive interaction between any two charged objects
Law of Superposition
Scientific law that states fossils located in deeper sediment layers are older than ones deposited in layers closer to the surface
The force that causes objects with mass to attract one another
Gravity
The luminous star around which Earth and other planets revolve; composed mainly of hydrogen and helium
The Sun
Magnetic Field
The area around a magnet or moving electrical charge that can exert a magnetic force
A particle with either positive or negative electrical charge
Charged Particle
Extinction
The permanent disappearance of a species from Earth
The rate of change of position (or distance traveled) with respect to time
Speed
A theory that says the universe began as a small point that expanded rapidly about 13.7 billion years ago
Big Bang Theory
A force consisting of both an electric component and a magnetic component, created by an electric current or moving electrical charge
Electromagnetic Force
Having the tendency to push other objects away from itself
Repulsive
The mineralized remains of organisms and the rock layers in which they are found, showing when and where long-dead organisms lived and how their bodies were structured
Fossil Record