Rocks

Question 1

What are the 3 types of “texture”?

Answer 1

fine, medium and coarse

Question 2

What is “extrusive”?

Answer 2

igneous rock which forms from cooled lava ON the earth’s surface

Question 3

What is “intrusive”?

Answer 3

Igneous rock which forms from cooled magma BELOW the earth’s surface

Question 4

What does “petro” mean?

Answer 4

a combination of rock and stone

Question 5

What is “petrology”?

Answer 5

the study of the origin and composition of rocks

Question 6

What are IGNEOUS rocks made of?

Answer 6

melted minerals or molten rock (magma inside the earth) - HOT rock

Question 7

What are METAMORPHIC rocks made of?

Answer 7

igneous and/or sedimentary rock that is “skwooshed” - it undergoes intense pressure and temperature

Question 8

What are sedimentary rocks made of?

Answer 8

pieces of other rocks or once living organisms

Question 9

Are FELSIC rocks light or dark in color?

Answer 9

light

Question 10

What mineral is in igneous FELSIC rocks?

Answer 10

silica

Question 11

What is an igneous INTERMEDIATE made up of?

Answer 11

50/50 mix of silica, iron (Fe), and magnesium (Mg)

Question 12

Are MAFIC igneous rocks light of dark?

Answer 12

dark

Question 13

What minerals are MAFIC igneous rock rich in?

Answer 13

Iron (Fe) and Magnesium (Mg)

Question 14

Are ULTRAMAFIC igneous light or dark?

Answer 14

Very dark

Question 15

Do ULTRMAFIC igneous rocks have more or less iron and magnesium than MAFIC rock?

Answer 15

Much more!