WorksheetsDynamic Earth Unit Test Review
Total questions: 45
Worksheet time: 24mins
What is a convection current?
the transfer of energy by direct contact.
the transfer of energy by the movement of matter
the transfer of energy through a solid, such as Earth's crust
the transfer of energy from a region of lower temperature to a region of higher temperature.
Which of the following occurs because of convection current?
Tectonic plates on the crust move.
Pressure in the crust increases.
The mantle increases in size.
Pressure in the crust decreases.
Which layer of Earth is broken into pieces that move and "float" slowly around causing things like earthquakes, volcanoes, and formation of mountains?
asthenosphere
lithosphere
inner core
faults
True or False: Because we rarely witness dramatic changes to the Earth, we can conclude that the Earth is not changing very much.
True
False
What happens to magma that is heated by the core?
It rises.
It sinks.
Plate Tectonics
It becomes part of the inner core.
Look at the image. The two continental plates are colliding. Why is the Indian Plate moving under the Eurasian Plate?
It's larger.
It's molten.
It's more dense.
It's less dense.
What is Pangaea?
Theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other
A process by which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
a supercontinent that began to break apart approximately 200 million years ago
Molten rock stored below Earth’s surface
What things are evidence of continental drift? Check all that apply.
rock structures
weather patterns
wind systems
fossil records
seafloor spreading
Molten rock stored below Earth’s surface
A deep, underwater trough created by one plate subducting under another plate at a convergent boundary
Long, narrow mountain range on the ocean floor, formed by magma at divergent plate boundaries
a process in which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
mid-ocean ridge
Molten rock stored below Earth’s surface
A deep, underwater trough created by one plate subducting under another plate at a convergent boundary
Long, narrow mountain range on the ocean floor, formed by magma at divergent plate boundaries
a process in which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
magma
Molten rock stored below Earth’s surface
A deep, underwater trough created by one plate subducting under another plate at a convergent boundary
Long, narrow mountain range on the ocean floor, formed by magma at divergent plate boundaries
a process in which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
lava
Molten rock stored below Earth’s surface
molten rock that erupts onto Earth’s surface
Long, narrow mountain range on the ocean floor, formed by magma at divergent plate boundaries
a process in which new oceanic crust forms along a mid-ocean ridge and older oceanic crust moves away from the ridge.
plate tectonics
a supercontinent that began to break apart approximately 200 million years ago
Theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other
A deep, underwater trough created by one plate subducting under another plate at a convergent boundary.
hypothesis that all continents were once connected in a single landmass that broke apart about 200 mya and drifted slowly to their current positions
ocean trench
a supercontinent that began to break apart approximately 200 million years ago
Theory that Earth’s surface is broken into large, rigid pieces that move with respect to each other
A deep, underwater trough created by one plate subducting under another plate at a convergent boundary.
hypothesis that all continents were once connected in a single landmass that broke apart about 200 mya and drifted slowly to their current positions
Scientists at the time rejected Wegener’s hypothesis of continental drift because he could not explain how or why Earth’s continents move.
True
False
Compared to oceanic crust, continental crust is
less dense
thinner
more dense
more mafic
Tsunamis are caused by
the collision of ocean currents
undersea earthquakes
high-pressure weather systems
hurricanes
This layer of Earth is solid iron and nickel
Outer Core
Mantle
Inner Core
Crust
Is the outer core solid or liquid?
solid
liquid
