What method have scientists NOT used to explore the ocean floor?

trained dolphins to fetch rocks from the ocean floor for analysis

How did the Appalachian Mountains in North America and the Atlas Mountains in North Africa provide evidence for Pangea?

Both ranges had similar types, ages, and sequences of rock layers

Which of the following statements about oceanic crust recycling is true?

The old crust in ocean trenches sinks into the mantle where it is destroyed

Which of the following statements about Wegener’s hypothesis is NOT true?

Wegener was the first to come up with the idea

Rocks near mid-ocean ridges are _________ rocks further away. This phenomenon is due to a process called __________.

younger than; seafloor spreading

Which of the following statements is NOT true of seismic waves?

Seismic waves travel at the same speed regardless of rock density

What statement below BEST explains why a convergent boundary is “destructive"?

As one plate subducts it melts into magma.

What is the lithosphere?

the outer, rigid part of the mantle and the crust combined

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Earth's Tectonic Plates (TCI)

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Answers

1
What method have scientists NOT used to explore the ocean floor?
trained dolphins to fetch rocks from the ocean floor for analysis
lead-weighted lines to map the ocean floor
converted an oil drilling ship to drill rock samples
sonar to map the ocean floor
2
How did the Appalachian Mountains in North America and the Atlas Mountains in North Africa provide evidence for Pangea?
Both ranges are comprised of a diverse assortment of rock types
Both ranges had similar types, ages, and sequences of rock layers
Neither range contained fossils prevalent near the equator
Neither had rock layers similar to the mountains found nearby
3
Which type of boundary is where trenches are formed?
Convergent
Seafloor Spreading
Divergent
Transform
4
Which of the following statements about oceanic crust recycling is true?
Crust gets hotter as it's older, floating over new crust that is destroyed
The old crust in ocean trenches sinks into the mantle where it is destroyed
Crust recycled at mid-ocean ridges where two plates crash into each other
Scientists no longer believe crust gets recycled
5
The crust beneath oceans, _________ crust, is thinner than the crust beneath continents, __________crust.
water; land
aquatic; rocky
marine; terrestrial
oceanic; continental
6
Which of the following statements about Wegener’s hypothesis is NOT true?
Wegener said all the continents used to be a single landmass named “Pangea"
Wegener was the first to come up with the idea
Wegner’s hypothesis was supported by the fossil record
Wegner was unable to determine what force pulled the continents apart
7
Which type of plate boundary is found where "sea floor spreading" happens?
Divergent
Subduction
Transform
Convergent
8
Scientists have found that rocks closer to the mid-ocean ridge are ___________________ than those further away.
cooler rocks
far from volcanic activity
less dense
more dense
9
The process of _________ occurs when large landmasses move, like when Pangea broke apart.
land transference
landmass movement
plate shift
continental drift
10
Rocks near mid-ocean ridges are _________ rocks further away. This phenomenon is due to a process called __________.
younger than; seafloor spreading
the same age as; weathering
a different type from; deposition
older than; seafloor converging
11
The Pacific ___________ is a region of heavy volcano and earthquake activity.
Circle of Volcanoes
Ring of Fire
Earthquake Zone
Lava Circuit
12
Which of the following statements is NOT true of seismic waves?
Seismic waves travel at the same speed regardless of rock density
Studying seismic waves helps scientists study the Earth’s interior
As they pass through rocks of different densities they change direction
Seismic waves are vibrations that result from earthquakes
13
What statement below BEST explains why a convergent boundary is “destructive"?
As plates collide, valleys form & fill with water causing a loss of land.
As one plate subducts it melts into magma.
As plates move away from each other, crust spreads and new crust upwells.
Plates slide past each other, creating a transform fault & material erodes.
14
What is the lithosphere?
the part of the core that is closest to the mantle where it is coolest
the outer, rigid part of the mantle and the crust combined
another name for Earth's crust
the part of the mantle near the core where it is hottest
15
A statement that’s accuracy can be tested by experiments and through observations is formally called a _______________.
proposition
deduction
conclusion
hypothesis

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