Quiz 9, Chapter 3, pp. 85-92

Question 1

The most common igneous rock is

Answer 1

basalt

Question 2

An igneous rock that formed when magma began cooling slowly but finished cooling more quickly is a _____ rock.

Answer 2

porphyritic

Question 3

What are hard, round sedimentary rock structures that form when minerals crystallize around a mineral fragment?

Answer 3

concretions

Question 4

Which type of sedimentary rock is made from mechanical sediments?

Answer 4

clastic sedimentary rock

Question 5

Which of the following is a well-known chemical sedimentary rock?

Answer 5

limestone

Question 6

Coal tar is another name for the substance

Answer 6

bitumen

Question 7

The general term for fuels derived from the remains of once-living things is ___ fuel.

Answer 7

fossil

Question 8

In surface mining of coal, the coal is exposed by removing the upper layers of ground, or

Answer 8

overburden

Question 9

A layer of sedimentary rock is called a

Answer 9

stratum or bed

Question 10

The type of sedimentary rock that consists of smooth pebbles in hardened sand or clay is

Answer 10

conglomerate rock