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Rocks : Igneous Rocks

Test Description: Rocks ang igneous rocks

Instructions: Answer all questions to get your test result.

1) What minerals are found in granite?

AMalachite, mica, feldspar, copper BFeldspar, hornblende, quartz, mica, CQuartz, mica, fluorite, corundum DLimestone, mica, calcite, galena

2) Which element(s) make a rock attract to a magnet?

Acopper Bmagnesium Ciron or nickel Dzinc or aluminum

3) A rock with porphyritic texture has.....

Afelsic and mafic characteristics Blarge crystals scattered on a background of much smaller crystals Csmall and large rocks scattered throughout the formed rock Dsmall crystalls

4) Which sentence is true about the grain size in rock?

AFlint is an example of a coarse grained flint. BGrains in fine-grained rocks are easy to see. CExample of coarse-grained is diorite and fine-grained is slate. DGrains in coarse-grained rocks are microscopic.

5) The grain shape of a rock, such as granite, is determined by....

AShape of fragments of other rocks BCoarseness of the rock\'s grains CShape of the rock's crystals that form the rock DSize of the crystals that form the rock

6) Which sentence is true about the silica composition of igneous rocks

AIgneous rocks high in silica are usually dark colored. BAn example of an igneous rock low in silica is granite. CAn example of an igneous rock high in silica is basalt. DIgneous rocks low in silica are usually dark colored.

7) Particles of minerals and other rocks that make up rock are called

Atextures Brock fragments Csediment Dgrains

8) Which sentence is true about basalt?

AIt forms beneath the Earth\'s surface BIt consists of large crystals CIt is the most common intrusive rock DIt forms from lava and much of the Earth\'s oceanic crust

9) Why have people throughout history, use igneous rocks for tools and building materials?

AThey are hard, dense, and durable BThey are malleable, soft and abundant CThey are decorative and coarse-grained DThey are good abrasives, ancient, and beautiful

10) The defintion of an igneous rock is?

ARock that contains iron BRock that contains iron CRock that forms from minerals DRock that forms from magma or lava

*select an answer for all questions

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