Ess 101 Quiz Questions With Correct
Detailed Answers.
Which lines get closer as they approach the poles? Lines of latitude or lines of
longitude? - ANSWER- Longitude
Draw a diagram showing lines of latitude and longitude on a globe that indicates your
answer to which of the lines get closer as they approach the poles. - ANSWER-
What could explain the asymmetry of magnetic stripes on the ocean floor? - ANSWER-
The seafloor spreading with reversing poles of the earth with the cooling of magma
locking the magnetism into the earth.
What is the difference between fracture and cleavage for a mineral? How can you
distinguish between them when looking at a sample? - ANSWER- Cleavage is the break
of a crystal face whereas the fracture is the chipping of the mineral. The fracture leaves
a rough and uneven surface but the cleavage is split along a plane. Cleavages are flat
and reflect light.
What does mafic mean? - ANSWER- Dark colored, richer in Mg and Fe
What are two mafic minerals? - ANSWER- Pyroxene, Plagioclase
What does felsic mean? - ANSWER- light colored, feldspar and quartz
What are two felsic minerals? - ANSWER- quartz, muscovite, orthoclase
What does Bowen's reaction series represent? - ANSWER- Bowen's reaction series is a
means of ranking common igneous silicate minerals by the temperature at which they
crystallize.
How do porphyritic-textured igneous rocks form? - ANSWER- In the first stage, the
magma is cooled slowly deep in the crust, creating the large crystal grains then the
magma cools rapidly at shallow depths/as it erupts from a volcano, creating the small
grains.
How does lava viscosity affect the slope of a volcano? - ANSWER- More viscosity, more
steep. Low viscosity, less steep.
What is a clastic sedimentary rock? - ANSWER- Clastic: are made from sediments that
come from preexisting rocks that have been weathered (breaking down into smaller
pieces) and eroded (transported away) then "glued" together (lithified).
Detailed Answers.
Which lines get closer as they approach the poles? Lines of latitude or lines of
longitude? - ANSWER- Longitude
Draw a diagram showing lines of latitude and longitude on a globe that indicates your
answer to which of the lines get closer as they approach the poles. - ANSWER-
What could explain the asymmetry of magnetic stripes on the ocean floor? - ANSWER-
The seafloor spreading with reversing poles of the earth with the cooling of magma
locking the magnetism into the earth.
What is the difference between fracture and cleavage for a mineral? How can you
distinguish between them when looking at a sample? - ANSWER- Cleavage is the break
of a crystal face whereas the fracture is the chipping of the mineral. The fracture leaves
a rough and uneven surface but the cleavage is split along a plane. Cleavages are flat
and reflect light.
What does mafic mean? - ANSWER- Dark colored, richer in Mg and Fe
What are two mafic minerals? - ANSWER- Pyroxene, Plagioclase
What does felsic mean? - ANSWER- light colored, feldspar and quartz
What are two felsic minerals? - ANSWER- quartz, muscovite, orthoclase
What does Bowen's reaction series represent? - ANSWER- Bowen's reaction series is a
means of ranking common igneous silicate minerals by the temperature at which they
crystallize.
How do porphyritic-textured igneous rocks form? - ANSWER- In the first stage, the
magma is cooled slowly deep in the crust, creating the large crystal grains then the
magma cools rapidly at shallow depths/as it erupts from a volcano, creating the small
grains.
How does lava viscosity affect the slope of a volcano? - ANSWER- More viscosity, more
steep. Low viscosity, less steep.
What is a clastic sedimentary rock? - ANSWER- Clastic: are made from sediments that
come from preexisting rocks that have been weathered (breaking down into smaller
pieces) and eroded (transported away) then "glued" together (lithified).
