PRACTICE QUIZ FOR LECTURE 4 MINERALS
Geos 101 Sects. 2 & 4H
Read each question carefully before you answer.
Click on the letter of the best answer.

1. Atoms are built up from

   a. protons, neutrinos, and electrons.

   b. cations and anions.

   c. protons, neutrons, and electrons.

   d. elements and isotopes.

2. The Earth's crust is composed chiefly of

   a. hydrogen and helium

   b. nickel and iron

   c. nitrogen and oxygen

   d. oxygen and silicon

3. The basic building block of all silicate minerals is

   a. silicate chain

   b. silicate cube

   c. silicate sheet

   d. silicate tetrahedron

4. Minerals

   a. are crystalline solids

   b. have a narrowly defined chemical composition

   c. are naturally formed

   d. all of the above

5. The resistance of a mineral to scratching is its

   a. cleavage

   b. hardness

   c. specific gravity

   d. streak

[RETURN to 101 Sect. 2 & 4H Practice Exams]