8th Grade STAAR Vocab Science (3)

a body of air that has about the same temperature and humidity throughout

• Air mass
• Velocity
• Unbalanced force

luminous globe of gas which produces its own heat and light by nuclear reaction

• Star
• Spectroscope
• Spectra

measurement of the total forces exerted on an object

• Net force
• Law of inertia
• Law of force and acceleration

a measure of the weight of the atmosphere on a given area of the surface of the Earth; barometric pressure

• Air pressure
• Air mass
• Velocity

a scientific theory concerning the early development and shape of the universe from a dense state which began and is still expanding

• Big Bang theory
• Apparent magnitude
• Absolute magnitude

the horizontal rows on the Periodic Table

• Periods
• Periodic Table
• Nucleus

an area where two air masses with different temperatures and pressures meet

• Weather front
• Psychrometers
• Prevailing winds

a change caused by the interaction of two or more substances (reactants) resulting in the formation of new substances (products)

• Chemical reaction
• Chemical formula
• Chemical equation

a representation of a molecule or compound in which the elements are represented by their symbols and subscripts represent the number of atoms of each element

• Chemical formula
• Chemical equation
• Chemical change

a pure substance that cannot be broken down chemically into simpler substances

• Element
• Electron cloud
• Electron