Chapter 17-18 Flashcards
All silicate minerals contain which two elements?
silicon, oxygen
oxygen, carbon
iron, silicon
silicon, sodium
silicon, oxygen
An atom’s mass number is 13 and its atomic number is 6. How many neutrons are in its nucleus?
6
7
19
13
7
As the rate of cooling increases (speeds up), the size of the crystals that form
vertical.
increases.
decreases.
is not affected.
decreases.
Atoms of the same element, zinc for example, have the same number of ________.
neutrons in the outer nuclear shell
protons in the nucleus
electrons in the valence bond level
electrons in the nucleus
protons in the nucleus
Atoms that have an electrical charge due to a gain or loss of electrons are called ________.
isotopes
isochrons
ions
periodic elements
ions
Igneous rock is formed
by the weathering of pre-existing rocks.
by changes in mineral composition.
at great depth within Earth.
by crystallization of molten rock.
by crystallization of molten rock.
Magnetic reversals
provide evidence for sea-floor spreading.
revealed that polar wandering may have occurred.
were discovered by the Deep Sea Drilling Project.
confirmed the existence of subduction zones.
cause the movements of plates.
provide evidence for sea-floor spreading.
Metamorphism may result from
heat.
pressure.
chemical action.
any or all of these
any or all of these
Mount St. Helens is associated with a
divergent boundary.
convergent (oceanic-oceanic) boundary.
convergent (continental-continental) boundary.
convergent (oceanic-continental) boundary.
transform fault boundary.
convergent (oceanic-continental) boundary.
New oceanic crust forms at
divergent plate boundaries.
convergent plate boundaries.
transform fault boundaries.
all of these
none of these
divergent plate boundaries.
Obsidian exhibits this texture.
aphanitic
glassy
porphyritic
phaneritic
glassy
Pangaea is
the Alaskan earthquake of 1964.
a portion of the Mid-Atlantic Ridge.
a German word for “plate tectonics.”
a name of a fossil.
the name of a supercontinent.
the name of a supercontinent.
Plates move apart leaving a gap at
divergent plate boundaries.
convergent plate boundaries.
transform fault boundaries.
all of these
none of these
divergent plate boundaries.
Plates move together along
divergent plate boundaries.
convergent plate boundaries.
transform fault boundaries.
all of these
none of these
convergent plate boundaries.
Plates slide past one another at
divergent plate boundaries.
convergent plate boundaries.
transform fault boundaries.
all of these
none of these
transform fault boundaries.
San Andreas fault exemplifies this type of plate boundary.
divergent boundary
convergent (oceanic-oceanic) boundary
convergent (continental-continental) boundary
convergent (oceanic-continental) boundary
transform fault boundary
transform fault boundary
Sedimentary rocks
may contain fossils.
hold important clues to Earth’s history.
are layered.
may be economically important.
all of these
all of these
The African rift valleys are associated with a
divergent boundary.
convergent (oceanic-oceanic) boundary.
convergent (continental-continental) boundary.
convergent (oceanic-continental) boundary.
transform fault boundary.
divergent boundary.
The Himalaya mountains were produced along a
divergent boundary.
convergent (oceanic-oceanic) boundary.
convergent (continental-continental) boundary.
convergent (oceanic-continental) boundary.
transform fault boundary.
convergent (continental-continental) boundary.
The Mid-Atlantic ridge is an example of a
divergent boundary.
convergent (oceanic-oceanic) boundary.
convergent (continental-continental) boundary.
convergent (oceanic-continental) boundary.
transform fault boundary.
divergent boundary.
The common rock produced by the metamorphism of limestone is
limestone
rhyolite
slate
marble
marble
The energy that causes plates to move is derived from
tidal forces.
solar energy.
Earth’s internal heat.
gravitational energy.
magnetic energy.
Earth’s internal heat.
The formation of the Hawaiian Islands is associated with
divergent boundaries.
convergent boundaries.
transform fault boundaries.
no plate boundary of any kind.
both a. and b.
no plate boundary of any kind.
The ion at the center of a silicon-oxygen tetrahedron is surrounded by ________.
six oxygen ions
four oxygen ions
four sodium ions
six sodium ions
four oxygen ions
