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Science Mid Term Part 2

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1.
1 point
___ is the force that pulls rocks apart.
2.
1 point
Paracutin, in Mexico, is a ___ volcano.
3.
1 point
___ faults are caused by tensional forces.
4.
1 point
the Glomar Challenger provided support for the theory of plate tectonics by providing___.
5.
1 point
The ___is(are) an example of a transform boundary.
6.
1 point
The most destructive seismic waves are ___.
7.
1 point
at a ___ fault, rocks on either side of the fault surface move past each other.
8.
1 point
___ is the force that causes plates to move sideways past each other.
9.
1 point
Once the elastic limit of rocks is passed, they break and move along surfaces called ___.
10.
1 point
Along a ___ fault, rock above the fault surface moves upward in relation to rock below the fault surface.
11.
1 point
Most earthquakes happen___.
12.
1 point
Primary waves ___ when they hit the liquid outer core.
13.
1 point
Active volcanoes are most likely to form at ___.
14.
1 point
In 1990, lava from ___ covered most of a town in hawaii.
15.
1 point
Wegener believed that the continents originally broke apart about ___.
16.
1 point
When the force on rocks is great enough, they break, producing vibrations called ___.
17.
1 point
The point in Earth's interior where the energy release of an earthquake occurs is the ___.
18.
1 point
While studying the ocean floor, scientists found ___ bands of magnetism.
19.
1 point
More than ___ of Earth's volcanoes are currentely active.
20.
1 point
along a ___ fault, rock above the fault surface moves downward in relation to rock below the fault surface.
21.
1 point
A ___ forms where two oceanic plates collide.
22.
1 point
Silica rich magma ___.
23.
1 point
the 1995 eruption of the Soufriere Hills volcano in Montserrat resulted in ___.
24.
1 point
Magma that squeezes int o a horizontal crack between rock layers and hardens is called a ___.
25.
1 point
the boundary between tow plates moving together is called a ___.
26.
1 point
A fossil animal that helps support the theory of continental drift is ___.
27.
1 point
Plates slide past one another at___.
28.
1 point
Magma forms deep inside Earth because of ___.
29.
1 point
All of the following will improve safety factors during an earthquake EXCEPT to ___.
30.
1 point
Matching___ on different continents are evidence for continental drift.
31.
1 point
___ are formed when two continental plates collide.
32.
1 point
One factor that determines whether a volcanic eruption will be quiet or explosive is ___.
33.
1 point
___ is the force that squeezes rocks together.
34.
1 point
Bands of rock on the seafloor showing alternating magnetic orientation indicated Earth's magnetic field has ___.
35.
1 point
Secondary waves ___ when they hit the liquid outer core.
36.
1 point
Seafloor spreading occurs because ___.
37.
1 point
Differences in ___ cause a volcanic neck to form.
38.
1 point
The height of the lines traced on paper is a measure of the energy released or the __ of the earthquake.
39.
1 point
At least __ seismographs are needed to accurately locate an earthquake epicenter.
40.
1 point
The __ waves are the first to reach a seismograph after an earthquake.
41.
1 point
Continental drift states that continents have moved ___ to their current location.
42.
1 point
Magma forms deep inside Earth because of ___.
43.
1 point
___ faults are caused by compressional forces.
44.
1 point
The alignment of iron minerals in rocks when they are formed reflects the fact that Earth's ___ has reversed itself several times in the past.
45.
1 point
A ___ is a sensitive device used to detect magnetic fields on the seafloor.
46.
1 point
The magnitude of an earthquake is measured by the ___.
47.
1 point
__ are formed when two continental plates collide.
48.
1 point
___ faults are caused by shear forces.
49.
1 point
A lack of explanation for continental drift prevented many scientists from accepting that a single supercontinent called ___ once existed.
50.
1 point
Sills are formed when ___.
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