SCIN100 -- Unit 1 exam with complete solutions

SCIN100 -- Unit 1 exam with complete solutions Which common mineral is composed entirely of silicon and oxygen? - answerQuartz Opaque means - answerNo light passes through the sample Although it is relatively common, limestone is an economically important rock type because its major constituent mineral, ________, is used in the production of ________. - answercalcite, cement What is not a type of mineral habit - answerMetallic The mineral quartz ha a higher hardness than the mineral Calcite - answerTrue The strong tendency of certain minerals to break along smooth, parallel planes is known as - answerCleavage Which of the following best defines a mineral and a rock? - answerIn a mineral the constituent atoms are bonded in a regular, repetitive, internal structure; a rock is a lithified or consolidated aggregate of different mineral grains. Atoms that have an electrical charge due to a gain or loss of electrons are called - answerIons Angles are important when looking at which physical properties of minerals - answercleavage gypsum, which is widely used to plaster and wallboard, is a member of the __________ group - answerSulfate Fluorite exhibits two directions of cleavage at 90 degrees - answerFalse which two elements combine to make most of the common rock forming minerals in the crust - answersilicon and oxygen what mineral is the hardest known substance in nature - answerdiamond the resistance of mineral to scratching is known as - answerhardness which one of the following mineral groups exhibits a sheet-like silicate structure - answerMicas which of the following denotes the positively charged particles in an atom's nucleus - answerprotons a mineral with a high specific gravity will feel heavy for its size - answertrue because of density Which common mineral is composed entirely of silicon and oxygen - answerquartz atoms that have an electrical charge due to a gain or loss of electrons are called - answerIons A naturally occurring concentration of one or more metallic minerals that can be extracted economically is - answerOre The composition of the Earth's inner core is thought to be ________. - answersolid iron- nickel alloy A ____________ is a well-tested and widely accepted view that best explains certain scientific observations - answerTheory the outer core is solid - answerfalse; it is liquid which of the following energy sources is thought to drive the lateral motions of earth's lithospheric plates - answergravitationa