The bending of rock without breaking is called jointing; folding; faulting; frac

Question

The bending of rock without breaking is called jointing; folding; faulting; fracturing The vast single continent present about 200 million years ago is called Pangaea; Tethys; Panthalassa; Gondwana The process by which a lithospheric plate descends into the mantle is called continental drift; sea-floor spreading; subduction; faulting The two most abundant elements in the Earth's core, by weight, are iron and nickel; oxygen and silicon; carbon and oxygen; hydrogen and helium The approximate thickness of the continental crust is about 2-5 km; 40-70 km; 100-200 km; 2000-3000 km An atom that has 20 protons and 20 neutrons in its nucleus has this atomic number 20; 40; 400; 10 In which type of chemical bonding are electrons shared between adjacent atoms? ionic; subatomic; covalent; isotopic Which of the following igneous rocks exhibit phaneritic texture? granite, gabbro; andesite, rhyolite; andesite, diorite; rhyolite, gabbro Explosive volcanic eruptions are likely to occur when the magmas involved are very low in silica, basic; very high in silica, andesitic or rhyolitic. very hot and fluid; very hot and very low in silica. This type of cone has a very steep slope, small in size and is composed of volcanic material. composite cones; shield cones; cinder cones; dome cones rocks that contain many pebbles and gravels are called

Explanation / Answer

1.B) folding

2.A)PANGAEA

3.C)SUBDUCTION

4..B)OXYGEN & SILICON

5.B)40-70 KM

6.B)40

7.C)COVALENT

8.A)GRANITE,GABBRO

9.B)Very high in silica,ANDESITIC or RHYOLITIC

10.C)CINDER CONES

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