What is a Rock?
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Questions and Answers

What is the characteristic feature of granite?

  • Coarse-grained crystals (correct)
  • Fine-grained crystals
  • Black in colour
  • Glassy appearance

What is the common use of polished granite slabs?

  • Production of jewelry
  • Construction of buildings
  • Decoration of buildings (correct)
  • Manufacturing of tools

What is the colour of the crystals of feldspar found in granite?

  • Black or silvery white
  • Grey or blue
  • White or pink (correct)
  • Brown or yellow

What is the term used to describe minerals that do not affect the classification of granite?

<p>Accessory minerals (B)</p> Signup and view all the answers

What is the minimum size of crystals in granite?

<p>5 mm across (D)</p> Signup and view all the answers

What type of rocks are used in the sport of curling?

<p>Granite (D)</p> Signup and view all the answers

What is the primary mineral found in granite?

<p>Quartz (C)</p> Signup and view all the answers

How do granite formations originate?

<p>Through slow cooling of magma (D)</p> Signup and view all the answers

What happens to granite over time, especially in humid climates?

<p>It is easily weathered and decomposes (B)</p> Signup and view all the answers

What can be found in the region surrounding a granite batholith?

<p>A variety of minerals, including tin, copper, and zinc (D)</p> Signup and view all the answers

What process can expose granite at the Earth's surface?

<p>Weathering and erosion (C)</p> Signup and view all the answers

What can cause the transformation of earlier-formed rocks into metamorphic rocks?

<p>Pressure and heat deep underground (D)</p> Signup and view all the answers

What type of rock can be formed from mud and sand on the beach or in a riverbed?

<p>Sedimentary rock (B)</p> Signup and view all the answers

What can sedimentary rocks become through geological processes?

<p>Both igneous and metamorphic rocks (C)</p> Signup and view all the answers

What is the process by which magma cools to form crystalline igneous rock?

<p>Magma cooling (D)</p> Signup and view all the answers

What is the location of magma?

<p>Underground (A)</p> Signup and view all the answers

What do geologists sometimes call igneous rocks?

<p>Primary rocks (B)</p> Signup and view all the answers

What is the characteristic of the crystals in igneous rocks?

<p>They are usually welded together (C)</p> Signup and view all the answers

Where do intrusive igneous rocks form?

<p>Underground in large masses (C)</p> Signup and view all the answers

What do extrusive igneous rocks build?

<p>Mountains of ash and dust (B)</p> Signup and view all the answers

What is the texture of igneous rocks?

<p>Mosaic (C)</p> Signup and view all the answers

What is a rock composed of?

<p>A mixture of mineral particles (C)</p> Signup and view all the answers

How are the ages of rocks determined?

<p>By studying the fossils they contain or the breakdown of radio-active elements (B)</p> Signup and view all the answers

What is the first step in the rock cycle?

<p>The formation of igneous rocks (A)</p> Signup and view all the answers

What happens to sedimentary rocks if they are buried deep in the Earth's crust?

<p>They melt and become igneous rocks (B)</p> Signup and view all the answers

What is the process of extreme heat or pressure that alters rocks?

<p>Metamorphism (C)</p> Signup and view all the answers

Approximately how old are the oldest radiometrically dated rocks?

<p>3900 million years old (D)</p> Signup and view all the answers

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