Rocks
Quiz by Josh
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22 questions
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- Q1What is the rock cycle?How rocks evolve from volcanic magma, to igneous, break down into sediments to form sedimentary, then form metamorphic and heat and pressure, and finally melt back into melted rock as magma.Refers to Mohs Scale which looks at the properties of rocksThe way in which a rock can turn overThe birth, lifespan and eventual death of rocks30s
- Q2What scale is used to show the hardness of rock1-10 scaleLustreRock and hammer testMohs scale30s
- Q3What is the correct order on the Mohs scale from softest to hardest?Talc, quartz, feldspar, diamondTalc, feldspar, diamond, quartzTalc, feldspar, quartz, diamondDiamond, feldspar, quartz, talc30s
- Q4Talc has a Mohs scale of 1FalseTrue30s
- Q5Diamond has a Mohs scale of 100TrueFalse30s
- Q6What type of rock is formed from cooled lava?Igneous rockDiamond rockSedimentary rockMetamorphic rock30s
- Q7How are large crystals formed in rocks?Are only formed in metamorphic rockBy slow cooling over a long period of timeBy rapid coolingBigger crystals are formed the deeper they are underground30s
- Q8The natural breaking down of rocks into sediments is called what?Weathering or erosionDecaying and crumblingWeathering or escevationMelting by volcano30s
- Q9What types of rocks are formed from ‘cementing’ of sediments?TalcSedimentary rocksMetamorphicIgneous30s
- Q10What type of rock is formed under heat and pressure?SedimentaryGraniteIgneousMetamorphic rock30s
- Q11Where are sediments most likely to end up?In volcanosIn mountainsIn oceans and riversIn rocky road30s
- Q12What does the lustre of rocksrefer to?The way a rock gives off light or shinesHow heavy it isThe colour of the rockThe colour it leaves when scratched against another surface30s
- Q13What does ‘streak’ refer to when testing rocks?The amounts of streaks that are found in the rockThe colour streaks found in the rockThe size of the rockThe colour of the powder that’s left behind when scratched against another surface30s
- Q14How do we calculate the density of rock?Weight (g) ➗ Displacemebt (L)Weight (kg) ➗ Displacement (mL) =Weighing the rockWeight (g)➗ Displacement (mL) =30s
- Q15Where is intrusive rock formed?In oceansOn the earths surfaceIn the air during a volcanic eruptionIn the earth30s