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WorksheetsEARTH SCIENCE ONLINE SEATWORK
Total questions: 50
Worksheet time: 50mins
The composition of magma determines its
color
darkness
resistance
viscosity
What is the physical property that describes a material's resistance to flow?
Buoyancy
Fluidity
Surface Tension
Viscosity
Why does magma move up to and through Earth's crust?
It is cooler than crust.
It is more viscous that ocean water.
It is more dense than surrounding rock.
It is less dense than surrounding rock.
When does magma form?
when volcanoes erupt
when grains have been compacted together
when temperature are hot enough to melt rock
when new minerals form due to chemical changes in the rock
What are all the processes associated with the discharge of magma, hot fluids, and gases?
Continental Drift
Plate Tectonics
Seafloor Spreading
Volcanism
A molten mixture of rock-forming substances, gases, and water from the mantle
lahar
lava
magma
mineral
A weak spot in the crust where molten material comes to the surface
earthquake
mountain
tsunami
volcano
How are magma's formed?
Magma's are formed through movement of rocks and minerals.
Magma's are formed under the earth’s mantle with the help of worms.
Magma's are formed through heating and cooling of materials on the earth’s surface
Magma's are formed under certain circumstances in special location deep in the crust or in the upper mantle.
Movement of tectonic plates and formation of volcanoes are endogenic processes.
TRUE
FALSE
It refers to the internal dynamics or processes of the Earth.
Endogenic
Endergonic
Exogenic
Exergonic
Which of the following is not an example of an endogenic process?
Volcanic Eruption
Metamorphism
Earthquake
Weathering
It refers to the process of producing magma.
Volcanic Eruption
Magmatism
Both Volcanic Eruption and Magmatism
None of these
It refers to an endogenic process wherein magma are released through the process of eruption.
Magmatism
Earthquake
Volcanic Eruption
Seismic Activities
A fold that results in an arch shape is a syncline.
True
False
How does folding affect Earth's surface?
Folding causes the crust to buckle, and over time, to rise up and form mountains.
Folding causes the crust to sink.
Folding causes the crust to bend in half.
Folding has no effect on Earth's surface.
Which type of stress occurs at divergent boundaries where plates pull apart?
tension
compression
shear
thermal heat
What is syncline?
A downfolded portion of rock layers.
An upfolded portion of rock layers.
A word Ms. Powell made up.
What is anticline?
A downfolded portion of rock layers.
An upfolded portion of rock layers.
A word Ms. Powell made up.
Which type of stress occurs at convergent boundaries where plates push into each other?
tension
compression
shear
thermal heat
In Earth Science, what is a fault?
It is who is to blame.
It is a fracture where pieces of earth move up, down and sideways.
It is a break in Earth's crust where pieces don't move.
Erosion is an example of an endogenic process.
TRUE
FALSE
Analyze if the statement is TRUE or FALSE:
Strain is the deformation exhibited by a body that is undergoing stress.
TRUE
FALSE
Folds are evidences of _______ deformation in rocks while faults are _______ deformation.
ductile, brittle
brittle, ductile
ductile, elastic
brittle, elastic
Which among the types of stress is similar to a rope being pulled from both sides?
compression
shear
tension
Tension force caused the upwards or downward movements of rock or rock layers. The displacement of rock layers caused the formation of _____ and _____.
faults and folds
cracks and folds
faults and cracks
folds and faults
Why does a foliated metamorphic rocks have banded or layered appearance?
This due to high pressure
This is due to high temperature
This is due to differential stress
This is due to differential strain
Why does magma rises up?
Magma rises due to density contrast.
Magma rises due to viscosity.
Magma rises due to density contrast and viscosity.
Magma rises due to density contrast, viscosity, and differential stress.
It describes the process of magma formation where melting results from the addition of volatiles, compounds that have low boiling point.
Decomposition melting
Flux melting
Heat transfer melting
Magmatic melting
How does decompression melting occurs?
It occurs when the temperature is constant but the pressure increases.
It occurs when the temperature is constant but the pressure decreases.
It occurs when the temperature decreases directly proportional to pressure.
It occurs when the temperature increases inversely proportional to pressure.
Which of the following statements is CORRECT?
High viscous magma means higher temperature, more silica content, and less violent eruption.
High viscous magma means higher temperature, less silica content, and more violent eruption.
High viscous magma means lower temperature, less silica content, and less violent eruption.
High viscous magma means lower temperature, more silica content, and more violent eruption.
Which set of elements are all present in magma?
Silicon, Lithium, Iron, Manganese
Oxygen, Silicon, Iron, Aluminum
Nitrogen, Potassium, Calcium, Aluminum
Iron, Calcium, Silicon, Lithium
What is the tendency of a magma with high silica content?
It tends to be hotter.
It tends to be less viscous.
It tends to be more viscous.
It tends to be less explosive.
At what temperature will magma turn entirely to liquid?
More than 2000 degrees Celsius
Between 1000 and 1200 degrees Celsius
Between 800 to 1000 degrees Celsius
More than 1300 degrees Celsius
What happened during flux melting?
Rock’s melting point is reduced when mixed with some oxygen or carbon dioxide.
Rock’s melting point is increased when mixed with some water or carbon dioxide.
Rock’s melting point is reduced when mixed with some water or carbon dioxide.
Rock’s melting point is increased when mixed with some oxygen or carbon dioxide.
What temperature and pressure conditions allow magma to form?
I. high pressure and high temperature
II. high pressure and low temperature
III. low pressure and high temperature
I only
I and II
III only
II and III
Why does partial melting of rocks on mantle occur?
Because rocks composition has different melting points.
Because rocks are made of metals.
Because rocks are made up of silicates.
Because rocks are pure materials.
Which of the following factors affect the melting of rocks?
temperature and pressure
pressure and mineral components of a rock
temperature and mineral components of a rock
temperature, pressure and minerals components of a rock
Which of the following refers to large pieces of the lithosphere that float on the asthenosphere?
asthenosphere
the mid-ocean ridge
deep-sea trenches
tectonic plates
The driving forces of tectonic plates are related to convection currents in which layer of the Earth?
crust
outer core
inner core
mantle
Besides molten rock, magma may also contain the following except:
dissolved gas
organic matter
solid rocks
suspended crystals
Magma originates in the lower part of the Earth's crust and in the upper portion of the mantle known as:
asthenosphere
outer core
subduction zone
vents
what gives magma it's explosive character?
gas
molten rocks
chemicals
minerals
It refers to the resistance to flow
combustibility
ductility
fluidity
viscosity
Magma collects in areas called as:
Vents
Craters
Caldera
Magma Chamber
it involves the upward movement of the earths mostly solid mantle
decompression melting
transfer of heat
flux melting
extrusion
