Test 3

Question 1

The layer of solid rock below the soil is

Answer 1

bedrock

Question 2

Substances that are found naturally in the earth and have a crystalline structure are

Answer 2

minerals

Question 3

Chemical sediments that result from the evaporation of water are

Answer 3

evaporites

Question 4

A soil substance composed of decayed organisms’ particles is

Answer 4

humus

Question 5

Rocks that have a smooth, glasslike texture are

Answer 5

amorphous

Question 6

The metal that is more valuable than gold or silver is

Answer 6

platinum

Question 7

The measure of the pull of gravity on an object is

Answer 7

weight

Question 8

A volcano that will probably not erupt again is called

Answer 8

dormant

Question 9

The largest group of minerals, which compose over 90% of the earth’s crust, are the

Answer 9

silicates

Question 10

The rarest, most durable, and most beautiful minerals are

Answer 10

precious stones

Question 11

A theory that has never been proven false is a

Answer 11

law

Question 12

A well-known chemical sedimentary rock is

Answer 12

limestone

Question 13

The most famous measure of earthquake strength, which rates earthquakes on a scale of 1-10, is the

Answer 13

Richter magnitude scale

Question 14

Which earthquake zone includes the San Andreas Fault

Answer 14

circum-Pacific belt

Question 15

Hard, round structures that form when minerals settle out of water and crystallize around a sand grain or other mineral fragments are called

Answer 15

concretions

Question 16

The group on which a test is performed is called the

Answer 16

experimental group

Question 17

Beryl that has a deep green color is

Answer 17

emerald

Question 18

The inner core of the earth is thought to be

Answer 18

solid

Question 19

Brass is an alloy of _____________ and zinc

Answer 19

copper

Question 20

Crystals are generally characterized by many flat surfaces called

Answer 20

faces

Question 21

About 80% of the world’s earthquakes occur in

Answer 21

the circum-Pacific belt

Question 22

Any piece of solid volcanic ejecta is a

Answer 22

pyroclast

Question 23

The breakdown of organisms is known as

Answer 23

decomposition

Question 24

The third step in the scientific method is

Answer 24

formulate a hypothesis

Question 25

A metal mixture of iron and carbon is

Answer 25

steel

Question 26

Mining that uses a rotating drum that travels down a long track while grinding while grinding coal is called _________ mining

Answer 26

longwall

Question 27

The most basic unit of matter is the

Answer 27

atom

Question 28

Type of rock formed when deposits of sand and mineral fragments are cemented together

Answer 28

sedimentary rock

Question 29

Any mineral that contains a valuable metallic element

Answer 29

ore

Question 30

Type of rock formed when magma solidifies

Answer 30

igneous rock

Question 31

A substance with a pH of 10 would be

Answer 31

basic