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ACT Science Glossary of Terms #5

Teacher: Mrs. S. Vandervort
Across
The sum of the atomic masses in a molecule
An organelle found inside a nucleus that is responsible for the production of ribosomes
A process in which cells produce genetically identical offspring
A rock whose crystal structure has been changed through heat and/or pressure
A substance formed by a chemical bond between two or more atoms
A resource that is not replaced or re-formed at all
The study of the Earth's atmosphere and weather
The amount of matter in an object; also a measure of the amount of inertia of an object. Common units are Kiograms (kg)
A naturally occurring element or compound found in the Earth's crust
The curved surface of a liquid in a cntainer; caused by surface tension
The amount of substance that contains as many particles as there are atoms in 12 grams of the carbon 12 isotope
The vector sum of all the forces acting on an object
Down
A wave that has the direction of motion of the particles in the medium parallel to the direction of motion of the wave. Sound is an example of this.
An organelle that produces ATP
A region under the ocean where new crust is being created and the plates on either side of the ridge are moving apart
A broad curve in a river
This force acts between any two surfaces in contact. It is the part of the contact force that acts perpendicular to the surface in contact
A process of cellular reproduction where the daughter cells have half the amount of chromosomes
A physical combination of different substances
The metric and System International unit of force.