Plz science 45 points
which occurs at a transform boundary?

a.

one plate collides with another head-on.

b.

two plates spread apart.

c.

one plate slides past another.

d.

one plate sinks beneath another.

according to the theory of plate tectonics, which forces cause the movement of plates in the earth's crust?

a.

earthquakes and volcanic eruptions

b.

magnetism and energy from solar radiation

c.

convection and the moon’s gravitational pull

d.

convection and gravity

which is generated by movements of tectonic plates?

a.
seismic waves

b.

earth's magnetic field

c.
volcanoes

d.
ocean currents
describes mid-oceanic ridges?

a.

transform plate boundary between oceanic plates

b.

divergent plate boundary in oceanic plates

c.

convergent plate boundary involving an oceanic plate

d.

divergent plate boundary in a continental plate

which event is the most common at a transform plate boundary?

a.

a hot spot volcano

b.

formation of a mountain chain

c.

a mid-ocean ridge

d.

frequent earthquakes

what do the yellow arrows in this illustration represent?

a.

direction of earth's magnetic field

b.

convection in the lithosphere

c.

movement of earth’s tectonic plates

d.

convection in the asthenosphere

which changes occur in the composition of the earth's layers from the core to the surface?

a.

the material is cooler and less dense.

b.

the material is hotter and less dense.

c.

the material is cooler and denser.

d.

the material is hotter and denser.

what feature will form as a result of the movement displayed in this illustration?

a.

transform boundary

b.

convergent boundary

c.

mid-ocean ridge

d.

deep-sea trench

which prevented many geologists from accepting wegener’s theory of continental drift?

a.
wegener could not explain how similar fossils could be found on different continents.

b.
wegener could not explain how the continents in the northern hemisphere fit together.

c.
wegener could not explain how similar geological features could be continued from one continent to another.

d.
wegener could not explain how the continents could move through the seafloor.

in which direction or directions do seafloors spread?

a.
inward toward the mid-ocean ridges

b.
north on the east side of the mid-ocean ridge and south on the west side of the ridge

c.
north and south parallel to mid-ocean ridges

d.
outward away from the mid-ocean ridges

which have scientists learned from studying seismic waves that travel through earth’s interior?

a.
there are no finite boundaries between the layers. they mesh into one another.

b.
the layers of the earth increase in density as one moves toward the earth's center.

c.
the inner core of earth is liquid.

d.
the crust of earth is liquid.

which is not evidence that wegener used to support his theory of continental drift?

a.
mountain ranges stretch across several continents, like the appalachian mountains across north america and europe.

b.

mesosaurus fossils have been found on different continents.

c.
the shapes of the continents fit together.

d.
magnetic orientations of rocks are symmetrical away from mid-ocean ridges.