the study of matter and it's interactions
Everything that makes up the universe. "Stuff"
Pure matter containing only one type of atom.
the basic unit of matter
two or more atoms, same or different, joined together
a combination of two or more substances that are not chemically combined.
a substance containing only one type of atom
the process by which one or more substances change to produce one or more different substances
a change that occurs when one or more substances change into entirely new substances with different properties
a change from one state (solid or liquid or gas) to another without a change in chemical composition
the elements or compounds that enter into a chemical reaction
the elements or compounds produced by a chemical reaction
Law of conservation of mass
the law that states that mass cannot be created or destroyed in ordinary chemical and physical changes
a chemical reaction that releases heat
a chemical reaction that absorbes heat
the passing of traits from one generation to the next
An allele whose trait always shows up in the organism when the allele is present.
An allele whose trait is masked when a dominant trait is masked when a dominant allele is present.
A segment of DNA on a chromosome that codes for a specific trait.
The different forms of a gene.
An organism's genetic makeup or allele combination.
An organism's physical appearance or visible traits.
A complex molecule that carries information about an organism and is passed from cell to cell and parent to offspring.
a threadlike body in the cell nucleus that carries the genes in a linear order
a process that develops new or improved breeds of animals or plants by introducing new or improved characteristics into the species
having two different alleles for a trait
having two identical alleles for a trait
a change or alteration in form or qualities
The study of Earth
one of the major layer, the outer most layer of earth.
The middle major layer
Inner part of the core, think solid.
Outer part of the core, thick liquid.
a block of lithosphere that consists of the crust and the rigid, outermost part of the mantle
When the temperature rises, particles move faster and they become less dense and rise. When they cool down they lower due to them becoming more dense.
method of determining the age of a fossil by comparing its placement with that of fossils in other layers of rock.
Example: Scientist use fossils to match up rock layers in different parts of the world.
A technique used to determine the actual age of a fossil
a plate boundary where two plates move toward each other
a plate boundary where two plates move away from each other
a plate boundary where two plates move past each other in opposite directions
a scientist who studies earthquakes
a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)
A vibration that travels through earth carrying the energy released during an earthquake