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Science Word 703

7th grade science terms

Bacteria smallest organisms on Earth, each of which is made up of only one cell.
Density measurable physical property that can be found by dividing the mass of an object by its volume.
Plate Tectonics theory that Earth's crust and upper mantle are broken into plates that float and move around on a plasticlike layer of the mantle.
Volume the amount of space an object takes up.
Mass amount of matter in a given object.
Seafloor Spreading Hess's theory that new seafloor is formed when magma is forced upward toward the surface at a mid-ocean ridge.
Plasma liquid part of blood, made mostly of water, in which oxygen, nutrients, and minerals are dissolved.
Pangaea large, ancient landmass that was composed of all the continents joined together.
Organ structure made of 2 or more differnt tissue types that work together to do a certain job.
Harry Hess is a man who first suggest ocean floor spreading.
Carnivore meat eating animal with sharp canine teeth specialized to rip and tear flesh.
Control standard for comparison in an experiment.
Continental Drift Wegener's hypothesis that all continents were onced connected in a single large landmass that broke apart about 200 million years ago and drifted slowly to their current positions.
Constant variable that does not change in an experiment.
Equator imaginary line that wraps around Earth at 0 degrees latitude, halfway between the north and south poles.
Hibernation period of inactivity during cold weather;in amphibians, involves burying themselves in mud or leaves.
Hypothesis an educated prediction of what is about to happen or appear.
Latitude distance in degrees north or south of the equator.
Longitude distance in degrees east or west of the prime meridian.
Map Legend explains the meaning of symbols used on a map.
Created by: Stan703