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Science test Flashcards

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1
Q

what common metal was worth more per ounce than gold before scientists found a practical means of xtracting it from ore

A

aluminum

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2
Q

Which of these is not a mineral asbestos, platinum, feldspar, or lequid water

A

Liquid water

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3
Q

the mineral cinnabar also called mercury sulfide, is an important source or _____ of mercury

A

ore

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4
Q

which of the following is a mixture copper diamond sand seawater

A

seawater

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5
Q

sulfur is native to mineral as quatz is to ______ ______

A

compound mineral

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6
Q

what is a mineral with only one kind of atom

A

native minerals

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7
Q

what are two or more substances combined but not chemically bonded

A

a mixture

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8
Q

copper resists corrosiion because it froms a tough outlet layer when it tarnisheds

A

true

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9
Q

all minerals are compose of two or more elements

A

false

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10
Q

a geologist who studis and idetnities mineral samples is called a what

A

mineralogists

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11
Q

what is the color of a minera’s powdera called

A

streak

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12
Q

all native minearls are pure elements

A

true

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13
Q

a minera’s steak is a more reliable way to classify a minearl than its apparent color

A

true

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14
Q

some minerals can have more than one color

A

true

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15
Q

the amount and quality of the light reflected form a minera’s surface is called what

A

luster

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16
Q

some minerals are too had to leave astreak on a streak plate

A

true

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17
Q

the process by which a crystal gows is called _________

A

accretion

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18
Q

if a minearl produces regular flat sufaces when it breaks then it exhibits

A

cleavage

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19
Q

cleavage and fracture both refer to the characteristic way in which a mineral breaks

A

true

20
Q

the Mohs scale is used to rate a minear’s resistance to fractureing

A

false

21
Q

which of teh following minerals has perfect cleavage magnetite mica pyrite or quartz

A

mica

22
Q

obsidian a mineral of volcanic orign breaks in smooth curves suraces what property deos it show

A

fracture

23
Q

a minearl rated as 1 on the mohs scale is what

A

soft

24
Q

what is the ratio of the density of a speciment to the density of water at 4 C

A

specific gravity

25
Q

when you conduct an acid test on a minraal sample you are watching for what

A

gas bubbles

26
Q

a dark minearl sample attracts iro fillings you could consclude that the mineral is what

A

magnetite

27
Q

a mineral sample that can glow for extended periods in the dark is said to be readioactive

A

false

28
Q

What is the glow caused by ultraviolet light illumination

A

flurescence

29
Q

what is the bending of light called

A

refraction

30
Q

_______ _________ occurs when a minera’s crystal structure splits a light beam passin thorough it into two parts thus two images ares seen though a transparent crystal

A

Double reraction

31
Q

a mineral sample gives a strong reading on a geiger counter you could conclude that the mineral is

A

pitchblende

32
Q

a tranparent mineeral fluoresces red and exhibit doubl refraction you could conclude that the miner is

A

calcite

33
Q

the brilliance of a diamond is due to its high index of ________

A

refraction

34
Q

which of the following is not a vative mineral copper gold quartz silver

A

quartz

35
Q

placer deposits of mineral sediments are found deep underground

A

false

36
Q

the best metallic condcutor of eletricity is what

A

silver

37
Q

diamond is composed of carbon

A

true

38
Q

deep vertical shaft of rock produced by volcanic activity in which diamonds are frequently called waht

A

diamond pipes

39
Q

a carat is a unit of what

A

mass

40
Q

he most abunant family or class of minerals is the _____

A

silicates

41
Q

oxides are compounds that consits of_______ and another elemtne usually a metal

A

oxygen

42
Q

scientists theorize that some macaws eat caly because they have what

A

a mineral deficiency

43
Q

fool’s gold a mineral of iron and sulfur, is classified as a what

A

sulfide

44
Q

mineral salts are properaly called what

A

halides

45
Q

the harder it is to obtian a mineral, the more common it becomes

A

false

Science (44 decks)

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