Plate Tectonics I
This is how the continents can move:
a) Plate Tectonics
b) Plate Boundaries
c) Pangea
d) Ocean Floor Structures
a) Plate Tectonics
When the continents and plates move, it is called ___________.
a) Pangea
b) seafloor spreading
c) continental drift
d) earthquakes
c) continental drift
An earthquake is an example of ____________.
a) subduction
b) a divergent boundary
c) a transform boundary
d) a convergent boundary
c) a transform boundary
Volcanoes most commonly occur at…
a) plate middles.
b) plate boundaries.
c) plate maximum altitudes.
d) plate minimum altitudes.
b) plate boundaries.
Where would you find the crater of a volcano?
example answer: At the top! It is the indentation in the middle of the volcano mountain.
Pangea
a) was an enormous single landmass.
b) existed about 245 million years ago.
c) broke apart into continents.
d) was all of the above.
d) was all of the above.
In convergence, the plates __________.
a) are pulled apart
b) are forced together
c) move in clockwise circles
d) form ridges
b) are forced together
Earthquakes are caused when _________ travelling as waves, passes through Earth.
a) sound
b) light
c) water
d) energy
d) energy
When molten rock is below Earth’s surface it is called…
a) basalt.
b) oobleck.
c) lava.
d) magma.
d) magma.
Where would you find lava in a volcano?
Example answer: On the OUTSIDE of the volcano! If the lava hasn't left the volcano it is still magma.
Which of the following is NOT part of the Theory of Continental Drift?
a) The continents are moving approximately 1 inch per year.
b) The shapes of the continents.
c) Continents stay in the same place for millions of years.
d) Earth’s tectonic plates move, moving the continents with them.
c) Continents stay in the same place for millions of years.
What forms at divergent boundaries?
a) Volcanoes
b) Subduction
c) Ridges
d) Trenches
c) Ridges
The location deep inside the Earth where an earthquake began is called the…
a) focus.
b) epicenter.
c) point zero.
d) quake point.
a) focus.
These volcanoes do not erupt explosively. They ooze lava that spreads over a wide area. The layers and layers of lava build up to form wide, gentle slopes.
a) Cinder cone
b) Caldera
c) Composite
d) Shield
d) Shield
Where would you find a volcano's secondary vent?
example answer: The secondary vent would most likely be attached to the main vent, but venting to the side of the volcano, instead of the very top.
Which two continents (See below.) appear to fit together, but don’t actually touch in today’s world?
a) South America
b) Europe
c) Asia
d) Africa
a) South America and d) Africa
Wegener noticed that ________________.
a) the continents were all the same size
b) the continents look like puzzle pieces that fit together
c) the continents were all the same shape
d) none of the continents had the same animals, rocks, or plants
b) the continents look like puzzle pieces that fit together
The strength of an earthquake is measured on a tool called a…
a) seismogram.
b) Richter scale.
c) seismograph.
d) spring scale.
c) seismograph.
What simple type of volcano is made of lava fragments that have been ejected from a volcanic vent?
a) Cinder cone
b) Caldera
c) Composite
d) Shield
a) Cinder cone
Earthquakes can be caused by…
a) a shifting fault line.
b) volcanic activity.
c) tsunamis.
d) Both a and b.
d) Both a and b.
The plates are constantly moving but you wouldn’t notice because they only move _____ a year.
a) about 2 feet
b) a few inches
c) a little less than 5 miles
d) a meters
b) a few inches
Earthquakes, volcanoes and mountains are caused by __________________.
a) plate tectonics
b) climate change
c) Pangaea
d) erosion
a) plate tectonics
A 4.0 earthquake releases _______ times more energy than a 2.0 earthquake.
a) 2
b) 20
c) 10
d) 100
d) 100
What type of volcano has steep sides and alternating layers of ash and lava?
a) Cinder cone
b) Caldera
c) Composite
d) Shield
c) Composite
To be considered a major earthquake, the quake must measure a _____ or above on the Richter scale…
a) 3
b) 5
c) 7
d) 9
c) 7