Dynamic Earth 2021 Question Preview (ID: 55985)
Earth Science.
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Where are the youngest rocks located on the ocean floor?
a) closest to trenches
b) closest to ridges
c) closest to the shoreline
d) closest to the middle of the ocean
How do plates move at a transform boundary?
a) Plates move away from each other, seafloor spreading can occur
b) plates slide past each other at a convergent boundary and earthquakes occur
c) Plates move away from one another and form volcanoes
d) plates move towards each other and form mountains or trenches
How do plates move at a convergent boundary?
a) plates move towards each other and form mountains or trenches
b) plates slide past each other at a convergent boundary and earthquakes occur
c) Plates move away from each other at a convergent boundary, seafloor spreading can occur
d) Plates move away from one another and form volcanoes
How do plates move at a divergent boundary and what forms there?
a) plates move together at a divergent boundary and volcanoes form
b) plates slide past each other at a divergent boundary and earthquakes occur
c) Plates move away from each other at a divergent boundary, seafloor spreading can occur at a divergent boundary
d) plates move together at divergent boundaries and form mountains
Explain the process of a volcano forming at a divergent plate boundary
a) plates move towards each other causing great force and magma rises
b) plates move away from one another to and magma rises causing a volcano
c) Plates move together to form the volcanic mountain
d) when plates move away from one another, a vent forms and magma explodes from the vent
What is a fault and where do they occur?
a) A break in Earth's lithosphere where movement can occur, usually form at plate boundaries
b) A deep trench on the ocean floor
c) a long ocean ridge on the ocean floor
d) all of the above
What are the different characteristics you would look for in a metamorphic rock to classify it?
a) if it is chemical or orgainic
b) intrusive or extrusive
c) foliated or non-foliated
d) basaltic or granite
How do sedimentary rocks form?
a) from heat and pressure deep inside Earth
b) from cooled magma
c) changes in temperature and pressure deep inside Earth
d) form when loose materials become pressed and cemented together
What is the hot melted material deep inside Earth called? What type of rock forms from this material?
a) lava and metamorphic rock forms
b) Magma and igneous rock forms
c) magma and sedimentary rock forms
d) lava and sedimentary rock forms
What are the four major causes of erosion?
a) humans, ice, animals, and wind
b) Humans, animals, gravity, and wind
c) Humans, animals, meteors, wind
d) Gravity, wind, ice, and moving water
List four main areas where deposition can build up.
a) Where to plates converge under the water
b) Where two plates diverge away from each other under the water
c) Swamps, deltas, beaches, the ocean floor
d) none of the above
Explain how ice and plant roots cause weathering to occur.
a) Ice puts pressure on the rock, plant roots are too soft to break rock
b) ice and plant roots cannot break rock and cause it to weather
c) Ice and plant roots put force on rocks and mechanically break them down
d) Ice and plant roots last for long periods of time which chemically makes the rock break down.
What do we call a large underwater mountain chain?
a) Ocean trench
b) Mid-ocean ridge
c) Ocean tectonics
d) Ocean mountains
Explain what is occurring when water freezes and breaks down rock.
a) The water contracts when it freezes forcing the rock to break
b) The water wiggles around causing the rock to break
c) Water cannot break rocks
d) The water expands when it freezes forcing the rock to break
Name two main items that were matched up on different continents that helped offer evidence for continental drift.
a) Rock structures and fossils
b) Rock structures and ocean patterns
c) Fossils and ocean patterns
d) Fossils and wind patterns
List the locations where a volcano can form.
a) Convergent plates
b) Divergent plates
c) Over hotspots
d) all of the above
Where and how to mid-ocean ridges form?
a) Where to plates converge under the water
b) Where two plates diverge away from each other under the water
c) Where two plates slide past each other
d) All of the above
Where and how do ocean Trenches form?
a) Where to plates converge under the water
b) Where two plates diverge away from each other under the water
c) Where two plates slide past each other
d) all of the above
Which layer of Earth has convection currents that make the plates move
a) the outer core
b) the inner core
c) the crust
d) the mantle
What evidence from Earth did scientists use to organize the geologic time scale
a) Their favorite times in history
b) rocks and fossils
c) evenly spaced time segments
d) all of the above
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