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WorksheetsPlate Tectonics
Total questions: 13
Worksheet time: 3hrs 15mins
Which features are commonly formed at the plate boundaries where continental crust converges with oceanic crust?
long chains of mid-ocean volcanic islands perpendicular to the coast
large volcanic mountain ranges parallel to the coast at the center of the continents
a deep ocean trench and a continental volcanic mountain range near the coast
an underwater volcanic mountain range and rift valley on the ocean ridge near the
coast
Why is the Atlantic Ocean growing larger while the Pacific Ocean is growing smaller?
The Atlantic Ocean has more mid-ocean ridges than the Pacific Ocean, so that keeps it growing larger.
The Atlantic Ocean has a spreading mid-ocean, while the Pacific Ocean is subducting faster than the mid-ocean ridges can make new land.
The Atlantic Ocean is building more islands than the Pacific Ocean, so the continents are pushed apart more
The Atlantic Ocean has more subduction areas, whereas the Pacific Ocean has more mid-ocean ridges.
What was the most complete hypothesis that Alfred Wegener made?
All the continents were once grouped together and had drifted apart over time.
All the continents were slowly rotating around the world in continental drift.
All the continents would slowly drift together over millions of years.
All the continents would slowly drift together over millions of years.
Jerome had read about plate tectonics and the mid-Atlantic ridge. He investigated by reading further, learning that evidence existed to show volcanic activity was happening along the mid-Atlantic ridge. How do the pillow-shaped rocks found there provide evidence that volcanic activity is taking place?
They form only when molten material cools slowly in warm water.
They form only when lava erupts above the water when the air is cool.
They form only when molten material hardens quickly in cold water.
They form only when molten material cools slowly in warm water.
