NEW
Font size
WorksheetsUnit 4 Review: Seafloor Spreading and Pressure
Total questions: 31
Worksheet time: 2hrs 33mins
Massive pieces of land that are part of the Earth's crust and upper mantle
Tectonic plates
Trenches
Divergent boundary
Continental shelves
The deepest part of the ocean; long, narrow ditches
Tectonic plates
Trenches
Divergent boundary
Continental shelves
___________ help explain why Earth is not getting any larger even though the tectonic plates are always moving.
earthquakes
subduction zones
fossils
volcanoes
The OLDEST seafloor is located?
Closest to the mid-ocean ridge
Farthest from the mid-ocean ridge
True or False : Sea-floor Spreading adds new material to the ocean floor?
True
False
What happens when Subduction occurs?
Parts of the crust fall into the mantle
Parts of the crust fall into the core
Parts of the crust fall into space
None of these
True or false : Deep-Ocean Trenches are underwater canyons?
False
True
What did scientists use to map the oceans floor?
Echo-location
Sonar
Space Shuttles
Animals
What process takes place at the trenches?
divergent boundaries
subduction
new crust is formed
mountain ranges
The oceanic crust is pushed aside on both sides of the
Continent's edge
Deep-ocean trench
Mid-ocean ridge
What is a divergent boundary?
two plates moving towards each other
two plates rubbing side to side
two plates moving away from each other
happens in the lithosphere
What is seafloor spreading?
continental crust-continental crust
rift valleys
seafloor spreads
ocean spreads and magma rises to fill in gaps creating a Mid Ocean Ridge
What is one piece of evidence of seafloor spreading?
age of the rocks
old rock pushes new rock to the side
scientist can use sonar
subduction
What is one real world example of seafloor spreading?
Pacific Ocean
Arctic Ocean
Atlantic Ocean
What words describe M? choose all
deep ocean trench
mid ocean ridge
sea floor spreading
subduction
What is the process happening at R?
Deep ocean trench
mid ocean ridge
subduction
sea floor spreading
At the Mid-Ocean Ridge and active volcanoes you can find:
fault lines
earthquakes
older crust
newest crust
What was the name of the supercontinent?
continental drift
Pangea
sea floor spreading
What was Wegener's hypothesis called?
The Pangea
sea floor spreading
The Continental Drift
Techtonic Plates
What evidence helped Wegener support his theory?
Climate change
Fossils
Land Features
All of the Above
The amount of force pushing on an area is the definition of....
Fluid
Viscosity
Barometer
Pressure
Pressure is equal to force divided by what
area
mass
time
distance
True or false:
Pressure depends on depth
true
false
Fluids can also include__ and__.
solids and liquids
solids and gases
liquids and gases
liquids
What is the unit of measurement for pressure?
pascal
grams
milliters
meters
Water is _______ times heavier than air.
10
20
30
800
When a free diver swims deeper into the ocean what happens to the air in their lungs?
It is forced out of the body through sweat pores
compressed (squeezed) into their bloodstream
it is all blown out through their mouth
trapped in the divers stomach
The force water exerts on an object that makes them feel lighter.
Gravity
Normal Force
Buoyant Force
Friction
What do fish use to keep them from sinking to the bottom of the ocean?
Lungs
Seaweed
Swim Bladder
Little Life Jackets
Water has a density of 1 gram per cubic centimeter. Objects with a density greater than that will:
sink
float
explode
Boyle's Law states that as pressure increases then volume:
increases
stays the same
decreases
