Test 6 (3.5-3.10)

Question 1

any trace of a plant or animal left in a rock

Answer 1

fossil

Question 2

the hardest known mineral; found in pipes

Answer 2

diamond

Question 3

a metal that is a good conductor of electricity; two of its alloys are brass and bronze

Answer 3

copper

Question 4

small deposits of igneous and metamorphic crystals

Answer 4

gemstones

Question 5

the most commonly used practical metal; used for thousands of years to make tools

Answer 5

iron

Question 6

any hollow space in the earth’s crust that has formed naturally and is large enough for a person to enter

Answer 6

cave

Question 7

the rarest, most durable and beautiful gems

Answer 7

precious stones

Question 8

any rocks containing a metal together with impurities

Answer 8

ore

Question 9

Over 75% of the earth’s surfaces covered in what type of rock?

Answer 9

sedimentary

Question 10

The area surrounding a magnet in which the force of the magnet affects other objects

Answer 10

magnetic field

Question 11

Rock that has been changed by extreme heat or pressure into a new kind of rock is known as what type of rock?

Answer 11

metamorphic

Question 12

The ends of a magnet

Answer 12

poles

Question 13

The hardest material that composes the earth’s crust

Answer 13

rock

Question 14

What type of metamorphic rock is made up of layers like the leaves of a book?

Answer 14

foliated

Question 15

What type of igneous rock is formed at the earth’s surface, cools rapidly, and has a fine-grained appearance?

Answer 15

extrusive

Question 16

Which metamorphic rock is perhaps one of the most beautiful and most widely used, and began as limestone?

Answer 16

marble

Question 17

What type of igneous rock remains in a pocket below the surface, cools slowly, and has a coarse-grained appearance?

Answer 17

intrusive

Question 18

Which metamorphic rock began as shale, is very hard, and has leaflike layers

Answer 18

slate

Question 19

What is the most common igneous rock and can be found everywhere on land?

Answer 19

granite

Question 20

Which sedimentary rock is the only stone formed by living animals?

Answer 20

reef limestone

Question 21

Which sedimentary is formed by chemical sediments and is used for salting roads and flavoring food?

Answer 21

halite

Question 22

Which sedimentary rock is used to make glass?

Answer 22

sandstone

Question 23

Be able to label cave formations

Answer 23

soda straws, stalactites, stalagmites, cave pearls, columns

Question 24

the poorest quality of coal, also known as “brown coal”

Answer 24

lignite

Question 25

a hard, shiny, black coal; expensive to mine

Answer 25

anthracite

Question 26

the most common type of coal, also known as “soft coal”

Answer 26

bituminous

Question 27

What visits a cave regularly but must return to the surface for food?

Answer 27

trogloxene

Question 28

Caves usually form in what?

Answer 28

limestone

Question 29

What type of cave is formed by the dissolving of underground rocks by water?

Answer 29

solution caves

Question 30

Where does the earth’s magnetic field come from?

Answer 30

The earth’s magnetic field is produced by currents of electricity that circulate in the earth’s outer core. Currents that flow through an object produce a magnetic field around the object.

Question 31

How does it remain “magnetized”

Answer 31

The earth remains magnetized because of the increasing electric currents deep within its core.