The Crust, The Mantle, and the Core are Earth's
Layers
Major bodies orbiting the Sun that are massive enough to have their own gravity
Planets
Quantity of matter an object has
Mass
Number of protons in the atomic nucleus
Atomic Number
Eukaryotic organelles that break down organic molecules to produce ATP.
Mitochondria
Shaking of the ground that results when rock under Earth's surface moves and breaks
Earthquakes
Dwarf Planet in our Solar System
Pluto
3 Laws of Motion written by
Isaac Newton
Time required for half the atoms in a sample of a radioactive isotope to decay.
Half-Time
An organism that has two identical alleles for a given one
Homozygote
The remains or traces of an ancient life forms
Fossils
A large assemblage of stars, interstellar gas, and dust
Galaxy
Work/Time=
Power
Structure in which atoms of different elements are bonded to one another
Compound
Inherited changes in populations of organisms over time.
Evolution
Hill or mountain formed by extrusion of lava, ash, and rock fragments
Volcano
Distance light travels in a year
Light Year
A Projectile or small body that orbits a larger body.
Satellite
Combination of two or more substances in which each substance retains its own properties
Mixture
External skeleton
Exoskeleton
The removal and transport of pieces of preexisting rock
Erosion
The first four planets orbiting the Sun; Mercury, Venus, Earth, and Mars
Inner Planets
Thermal energy that flows from a substance of higher temperature to a substance of lower temperature
Heat
Process by which a reactant loses one or more electrons
Oxidation
Cell that receives and transmits electrical signals from one part of the body to another
Neuron