COMPLETE ESS 101 LAB QUIZ (100% ACCURATE 2025
EXAM QUESTIONS AND ANSWERS) LATEST UPDATE.
What does the Bowen's reaction series represent? - CORRECT ANSWER -
Bowen determined that specific minerals form at specific temperatures as a magma
cools. At the higher temperatures associated with mafic and intermediate magmas,
the general progression can be separated into two branches.
How do porphyritic-textured igneous rocks form? - CORRECT ANSWER -
Porphyritic rocks are formed when a column of rising magma is cooled in two
stages. In the first stage, the magma is cooled slowly deep in the crust, creating the
large crystal grains, with a diameter of 2mm or more.
Which lines get closer together as they approach the poles? Lines of latitude of
lines of longitude (circle one)? - CORRECT ANSWER - Latitude and longitude
comprises a grid system of lines encircling the globe and is used to determine the
locations of points on the earth. Lines of latitude, also called parallels, run east -
west. Latitude lines always run parallel to each other, and hence, they are always
an equal distance apart.
What could explain the asymmetry of magnetic stripes on the ocean floor? -
CORRECT ANSWER - The magnetic stripes represent fluctuating polarity
changes of the Earth's magnetic field preserved in the basaltic ocean crust. The
reversals have been dated using K-Ar dating producing a paleomagnetic time scale
What is the difference between fracture and cleavage for a mineral? How can you
distinguish between them when looking at a sample? - CORRECT ANSWER -
Fracture is the characteristic way a mineral break. The difference between cleavage
and fracture is that cleavage is the break of a crystal face where a new crystal face
is formed where the mineral broke, whereas fracture is the "chipping" of a mineral.
What does mafic mean? What are two mafic minerals? - CORRECT ANSWER -
Mafic is an adjective describing a silicate mineral or igneous rock that is rich in
magnesium and iron, and is thus a portmanteau of magnesium and ferric. Most
mafic minerals are dark in color, and common rock-forming mafic minerals
EXAM QUESTIONS AND ANSWERS) LATEST UPDATE.
What does the Bowen's reaction series represent? - CORRECT ANSWER -
Bowen determined that specific minerals form at specific temperatures as a magma
cools. At the higher temperatures associated with mafic and intermediate magmas,
the general progression can be separated into two branches.
How do porphyritic-textured igneous rocks form? - CORRECT ANSWER -
Porphyritic rocks are formed when a column of rising magma is cooled in two
stages. In the first stage, the magma is cooled slowly deep in the crust, creating the
large crystal grains, with a diameter of 2mm or more.
Which lines get closer together as they approach the poles? Lines of latitude of
lines of longitude (circle one)? - CORRECT ANSWER - Latitude and longitude
comprises a grid system of lines encircling the globe and is used to determine the
locations of points on the earth. Lines of latitude, also called parallels, run east -
west. Latitude lines always run parallel to each other, and hence, they are always
an equal distance apart.
What could explain the asymmetry of magnetic stripes on the ocean floor? -
CORRECT ANSWER - The magnetic stripes represent fluctuating polarity
changes of the Earth's magnetic field preserved in the basaltic ocean crust. The
reversals have been dated using K-Ar dating producing a paleomagnetic time scale
What is the difference between fracture and cleavage for a mineral? How can you
distinguish between them when looking at a sample? - CORRECT ANSWER -
Fracture is the characteristic way a mineral break. The difference between cleavage
and fracture is that cleavage is the break of a crystal face where a new crystal face
is formed where the mineral broke, whereas fracture is the "chipping" of a mineral.
What does mafic mean? What are two mafic minerals? - CORRECT ANSWER -
Mafic is an adjective describing a silicate mineral or igneous rock that is rich in
magnesium and iron, and is thus a portmanteau of magnesium and ferric. Most
mafic minerals are dark in color, and common rock-forming mafic minerals
