Question 1

Which rock sample is formed from cooling and solidifying magma?

Accepted Answer

A) Sample A. 
B) Sample B. 
C) Sample C. 
D) None of the above answers are correct.

Question 2

What are the three families of rocks? How does each of these families differ?

Accepted Answer

The answer of What are the three families of rocks?...

Question 3

Sample (A,B,or C)_____ is of a rock whose original sedimentary or igneous form and mineral assemblage have been changed as a result of exposure to high temperature,high pressure or both.This type of rock is referred to as a metamorphic rock.

Accepted Answer

A)   
B)   
C)

Question 4

The two most abundant mineral families of Earth's crust are the silicates and the _____.

Accepted Answer

The answer of The two most abundant mineral families of...

Question 5

The mass number of an atom is the sum of the protons and ______.

Accepted Answer

The answer of The mass number of an atom is...

Question 6

What's the difference between a rock and a mineral?

Accepted Answer

The answer of What's the difference between a rock and...

Question 7

The two most common mineral families in Earth's crust are

Accepted Answer

A) the silicates and the oxides. 
B) the silicates and the carbonates. 
C) the carbonates and the oxides. 
D) the phosphates and the oxides.

Question 8

Which of the following is the weakest silicate structure?

Accepted Answer

A) single tetrahedron 
B) hexagonal ring 
C) sheet 
D) framework 
E) single chain

Question 9

Which element is the most abundant (by weight)in Earth's crust?

Accepted Answer

A) silicon 
B) iron 
C) calcium 
D) oxygen

Question 10

Which sample is an example of sedimentary rock?

Accepted Answer

A) Sample A. 
B) Sample B. 
C) Sample C. 
D) None of the above answers are correct.

Question 11

The properties of compounds are not the same as the properties of their constituent elements.

Accepted Answer

A) True 
 B)False

Question 12

In the illustration below,the part of the atom in which virtually all the mass is concentrated is referred to as the:

Accepted Answer

A) first electron energy level. 
B) second electron energy level. 
C) Both A and B are correct. 
D) nucleus.

Question 13

The photo below shows two specimens of the mineral quartz.According to Steno's law the angle shown between faces 1 and 3 will be ______ in both samples.

Accepted Answer

The answer of The photo below shows two specimens of...

Question 14

In the illustration below,the part(s)of the atom that has a negative charge is referred to as the:

Accepted Answer

A) first electron energy level. 
B) second electron energy level. 
C) Both A and B are correct. 
D) nucleus.

Question 15

The natural samples of corundum pictured below show variations of color from red (ruby)to blue (sapphire).The differences in color is best explained by:

Accepted Answer

A) polymerization 
B) crystal structure 
C) the principle of atomic substitution 
D) polymorphism

Question 16

The illustration below shows five different silicate structures.Of these,the structure labeled _____ exhibits the strongest structure for silicates.

Accepted Answer

The answer of The illustration below shows five different silicate...

Question 17

One atom of a hypothetical element X has 27 protons while another has 29.This would make the two atoms of the element

Accepted Answer

A) molecules. 
B) compounds. 
C) ions. 
D) isotopes.

Question 18

Explain why it is not necessary to chemically analyze a common mineral in order to make an identification.

Accepted Answer

The answer of Explain why it is not necessary to...

Question 19

The mass number of an atom is:

Accepted Answer

A) the number of protons and neutrons in the nucleus. 
B) the number of protons in the nucleus. 
C) the number of neutrons in the nucleus. 
D) the number of electron energy levels.

Question 20

What holds rocks together?

Accepted Answer

The answer of What holds rocks together?...

Exam 2: Earth Materials