Earth Science Exam 1 Questions And Answers Rated A+ New Update Assured Satisfaction

Mineral - Answer-A solid inorganic substance of natural occurrence. Crystal - Answer-A substance in which the particles are arranged in an orderly, geometric, repeating pattern. Atomic Number - Answer-The number of protons in the nucleus of an atom. Atomic Mass - Answer-The average mass of all the isotopes of an element. Isotope - Answer-Atoms of the same element that have different numbers of neutrons. Rock - Answer-A naturally occurring solid mixture of one or more minerals or organic matter. Rock Cycle - Answer-A series of processes on the surface and inside Earth that slowly changes rocks from one kind to another. Igneous Rock - Answer-A type of rock that forms from the cooling of molten rock at or below the surface. Sedimentary Rock - Answer-A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together. Streak - Answer-The color of a mineral in powdered form. Metamorphic Rock - Answer-A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions. Lithosphere - Answer-A rigid layer made up of the uppermost part of the mantle and the crust. Atmosphere - Answer-A mixture of gases that surrounds a planet or moon.Mantle - Answer-A layer between Earth's crust and the outer core. Inner Core - Answer-A dense sphere of solid iron and nickel at the center of Earth. Outer Core - Answer-A layer of molten iron and nickel that surrounds the inner core of Earth. Moho - Answer-The boundary between the earth's mantle and crust. Pangea - Answer-A supercontinent containing all of Earth's land that existed about 225 million years ago. Hardness - Answer-A measure of how easily a mineral can be scratched. Luster - Answer-The way a mineral reflects light from its surface.