SPACE 1
VOCABULARY
Hypothesis
-Is a tentative explanation that is tested to determine if it is valid.
-This is a statement that is tested.
-Is tested more than once.
-Can be proven or disprove.
-Usually has If, then, because, in the statement.
Nebula
-Is a cloud of gas and/or dust in space.
-Also made up of gas.
-Part of the nebular hypothesis.
Nebular Hypothesis
-Is the theory that the solar and stellar systems were developed from a primeval nebula.
-Is a hypothesis.
-Beveled that our universe was created by a nebular.
Solar System
-the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
Hydrogen
-a colorless, odorless, highly flammable gas, the chemical element of atomic number
-Symbol is H
-Atomic number is 1
Helium
-the chemical element of atomic number 2, an inert gas that is the lightest member of the noble gas series.
-Symbol is He
-Atomic number is 2
Planetesimals
-Is a body that could or did come together with many others under gravitation to form a planet.
-Also called a minute planet.
-Forms a planet.
-Similar to the Nebular Hypothese
Density
-Is the mass per unit volume of a substance, usually expressed as grams per cubic centimeter.
-Tells you Which floats more.