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Worksheets4.3 Ocean & Land Features
Total questions: 13
Worksheet time: 3hrs 15mins
Seafloor spreading is taking place at a divergent boundary on the bottom of the Atlantic Ocean. What is causing this to happen?
Change in climate
Volcanic subduction zones
sedimentary rock forming
metamorphic rock forming
tectonic plates moving
What type of plate boundary would form the largest mountain ranges on the planet?
Transform boundary
Divergent boundary
Convergent boundary, ocean plate to ocean plate
Convergent boundary, land plate to land plate
What type of plate boundary would form new crust on the ocean floor?
Divergent, Ocean-Ocean
Divergent, Land-Land
Convergent, ocean-ocean
Convergent, land-land
transform, ocean-ocean
What type of boundary would form volcanoes that look like mountains on land and a trench on the ocean floor?
Divergent Ocean-land
transform Ocean-land
Convergent Ocean-land
Convergent ocean-ocean
Convergent land-land
Hurricanes and large tropical storms can cause a lot of damage often reshaping the coastline of areas where these storms hit land. What would cause this to happen?
weathering due to winds
weathering due to rain
erosion due to ice wedging
erosion due to waves and rain
erosion due to animals
What would two tectonic plates need to do to form folded mountains?
Divide apart at a divergent zone
Push together at a convergent zone
Move past each other at a transform boundary
Subduct at a transform boundary
Push together and create a trench underwater
In a subduction zone, the tip of the plate that moves below the plate on top, melts and the magma moves upward creating volcanoes. Where does the heat come from that causes this?
The heat energy comes from the sun
The heat energy comes from stars in the galaxy
The thermal heat source is the mantle
The thermal heat source is the ocean floor
The thermal heat source is the mid ocean ridge
What types of features may form when two oceanic plates collide?
A large mountain range
A small valley
Volcanic island arc
A trench
Volcanic island arc and trench
Weathering happens when:
Sediments combine under heat and pressure to form a rock
Rocks break into smaller pieces
Boulders roll downhill
Sand on a beach is moved by waves
Small animals dig holes
The amount of rain, the amount of wind, plants protecting the dirt, how steep the ground is, and the type of soil are all factors that would affect;
the rate of erosion
the rate of weathering
the climate in an area
If you should grow plants there
If you should build a house there
When an oceanic plate and a continental plate are colliding at a convergent boundary, the oceanic plate always subducts under the continental plate. Why?
The plate that is the largest will always stay on top
Both plates are made of the same material
the faster moving plate will move under the slower plate
Oceanic plates are more dense than land plates, so they move downward
Land plates are more dense than oceanic plates, so they always move downward under the ocean plates.
The mid-ocean ridge down the center of the Atlantic Ocean is creating new crust at a rate of 2.5 cm per year. But the Pacific Ocean is only expanding at a rate of 1 cm per year. If this continues over millions of years what is likely to happen?
The Atlantic Ocean will gradually become larger than the Pacific ocean.
The sizes will not change over time
It will shift ocean currents and flood land plates
The Atlantic Ocean will quickly shrink
The Pacific Ocean will change shape in just a few years
Overtime the Earth's surface is changed by weathering and erosion. In this picture what influence is changing the landscape the most?
Hot sun weakening the rock and evaporating the water
Plant roots weathering the rock
The steepness of the canyon walls
The erosion caused by rain
The erosion caused by moving water
