MINERLAS & ROCKS INTRODUCTION

Question 1

4 major environments of earth’s system

Answer 1

• hydrosphere(water on planet. a planet’s hydrosphere can be liquid, vapor, or ice.)
• atmosphere(air)
• geosphere(sold earth)
• biosphere(global ecosystem composed of living organisms (biota) and the abiotic (nonliving))

Question 2

mineral def

Answer 2

Naturally occurring homogeneous solid, inorganically formed, with a definite chemical comp and ordered atomic arrangement

e.g sodium chloride, rock salt

Question 3

rock def

Answer 3

in general aggregates of minerals

some rocks are made up of 1 rock type, e.g limestone made of calcite

some consist of glass, e.g obsidian

Question 4

aggregate def

Answer 4

component of composite materials such as concrete

Question 5

3 major rock types

Answer 5

igneous

sedimentary

metamorphic

Question 6

igneous formation

Answer 6

rocks crystallised from molten material (magma), e.g granite

Question 7

sedimentary formation

Answer 7

by weathering of pre-existing clasts at earth’s surface and cemented together through water pressure over time

form in places where material is moved around and deposited, like rivers, deserts, lakes and oceans.

Question 8

metamorphic formation

Answer 8

by alteration and solid-state recrystallisation of pre-existing ig/sed/met rocks due to heat/pressure at depth within earth

NOT MELTING

Question 9

use of mineral

Answer 9

Glass is made of quartz – silicon dioxide

But, like a lot of modern iPhones, glass been strengthened. Do that, add a few things. One of them is aluminium oxide. Comes from bauxite