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The original land mass of the Earth, before continents, was called?
The slabs of rock known as continents make up the complete lithosphere. True or False
Many earthquakes happen along the borders of tectonic plates. True or False
The major movement of the plates and description of plate boundaries of the Earth are?
Tectonic plates float on what layer?
Convergent movement of two plates often results in one plate pushing under another. True or
False
There are areas of liquid rock under the middle of plates, resulting in volcanic activity and chains
of islands. True or False
Scientists think continental plates move because of circulating liquid rock below the plates. True
or False
The Earth may be the only object in the Solar System with plate tectonics. True or False or
Unknown
What are the results of plate tectonics?
11. The two types of crust are _________________________ and
_________________________.
A) land, pangaea
B) oceanic, land
C) oceanic, continental
D) continental, volcanic
E) oceanic, volcanic
12. Iceland, the Samoan Islands, and Hawaii are examples of landforms created by
____________________________.
A) a subduction zone
B) a convergent zone
C) a hot spot
D) a divergent zone
E) a ring of fire
13. At mid-ocean ridges, new ____________________________ crust is created.
A) oceanic
B) continental
C) volcanic
D) convergent
E) transform
14. Seafloor spreading is a process that creates new ________________________ crust.
A) convergent
B) continental
C) volcanic
D) oceanic
E) transform
15. The _________________________ Islands are located in the middle of the Pacific plate.
A) Icelandic
B) Samoan
C) Hawaiian
D) Ring
E) Australian
16. Convection currents in our Earth's mantle drives the process that moves our
__________________________.
A) mountains
B) oceans
C) crusts
D) clouds
E) volcanoes
17. The largest and most powerful mountains and volcanoes are located
_____________________________.
A) above surface
B) on the surface
C) on Iceland
D) on Australia
E) underwater
18. Areas where continental and oceanic plates converge are also said to be
_____________________________.
A) Icelandic zones
B) Australian zones
C) subduction zones
D) mid-atlantic zones
E) mid-pacific zones
19. Between oceanic and continental crusts, the ___________________ crust is more dense.
A) convergent
B) continental
C) oceanic
D) divergent
E) transform
20. The rate of seafloor spreading is approximately ______________ every 10 years.
A) 30 meters
B) 30 inches
C) 3 inches
D) 3 cm
E) 30 cm
21. As the ocean seafloor spreads, the newly formed floor will adapt a specific magnetic
signature according to the Earth's magnetic pole at that time. As years pass, lateral segments of
seafloor will thus share the same _____________________ signature on either side of the midoceanic ridge.
A) convergent
B) volcanic
C) magnetic
D) zubductive
E) divergent
22 In seafloor spreading, the further the ocean floor is away from the mid-ocean ridge, the
_____________________ that floor will be.
A) prettier
B) newer
C) rockier
D) younger
E) older
23. Iceland is located in the middle of
_______________________________________________________________.
A) the mid-convergent ridge
B) the mid-Pacific ridge
C) the mid-Australian ridge
D) the mid-Caribbean ridge
E) the mid-Atlantic ridge
24. In an island chain such as Hawaii, volcanic islands further away from the hot spot will tend
to be ________________________.
A) newer
B) older
C) rockier
D) younger
E) prettier