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WorksheetsUnit 2: Lesson 1 & 2 Review
Total questions: 20
Worksheet time: 10mins
What is the basic concept of Continental Drift?
The idea that Earth's continents were once joined in one piece of land and gradually drifted apart
The idea that Earth's continents were always separate and never moved
The idea that Earth's continents were created by tectonic plate collisions
The idea that Earth's continents were formed by volcanic activity
Who proposed the theory of Continental Drift?
Galileo Galilei
Alfred Wegener
Charles Darwin
Isaac Newton
What evidence did Alfred Wegener use to support his theory?
Meteor showers, comets, and asteroids
Volcanic eruptions, earthquakes, and tsunamis
Tidal waves, hurricanes, and tornadoes
Matching coastlines, fossils, and rock formations
Which continents did Alfred Wegener identify as fitting together like a puzzle?
Europe and Asia
Antarctica and India
Africa and South America
North America and Australia
What is the primary evidence for Continental Drift?
The discovery of glacial grooves on multiple continents
The presence of coal beds in Antarctica
The matching rock formations in Australia, South America, Africa, India, and Antarctica
The puzzle-like nature of continents
Which type of evidence suggests that South America, Africa, India, and Australia were once closer to the South Pole?
Coal deposits
Glacial features
Rock formations
Fossil evidence
What does the presence of coal beds in Antarctica indicate?
A warmer and wetter past climate in Antarctica
A colder and drier past climate in Antarctica
The presence of ancient forests in Antarctica
The absence of any past climate change in Antarctica
What challenges did Wegener's continental drift theory face?
The difficulty in conducting experiments and collecting data
The opposition from other scientists and the lack of public interest
The lack of evidence for matching coastlines, fossils, and rock formations
The slow nature of the process, unknown forces driving movement, and the belief that the mantle was solid rock
What prevented further evidence during Wegener's lifetime?
Lack of support from the government
Lack of funding for research
Lack of tools and knowledge about seafloor
Lack of interest from the scientific community
What device did scientists use to measure ocean depths during the late 1940s?
Sonar
Seismograph
Echo sounder
Radar
What did scientists use the collected data from the echo sounder to create?
Astronomical maps
Geological maps of continents
Weather maps
Topographic maps of the seafloor
What are mid-ocean ridges?
Extensive mountain ranges in the middle of oceans
Deep underwater troughs on the seafloor
Large underwater caves
Volcanic islands
What are ocean trenches?
Deep underwater troughs on the seafloor
Extensive mountain ranges in the middle of oceans
Large underwater caves
Volcanic islands
What is the Mariana Trench known for?
Being the largest ocean on Earth
Being the highest mountain on Earth
Being the deepest landform on Earth
Being the longest river on Earth
How did scientists determine the age of the seafloor?
By analyzing rock samples from the ocean floor
By measuring the temperature of the ocean water
By studying the behavior of marine animals
By examining satellite images of the seafloor
What do isochron maps of the ocean floor show?
Stripes across the seafloor parallel to mid-ocean ridges
Random distribution of ages on the seafloor
Circular patterns on the seafloor
Spiral shapes on the seafloor
What is the mechanism behind seafloor spreading?
Magma rising through cracks and forming new oceanic crust
The collision of tectonic plates
The erosion of the seafloor by ocean currents
The deposition of sediment on the seafloor
How do continents move according to the concept of seafloor spreading?
Only during periods of volcanic activity
In the opposite direction of the spreading seafloor
Independently of the spreading seafloor
In tandem with the spreading seafloor along mid-ocean ridges
What is the lithosphere?
The layer directly below the lithosphere
The layer between the asthenosphere and the mantle
Earth's outermost layers consisting of the crust and upper mantle
The layer directly above the lithosphere
What is the asthenosphere?
The layer between the lithosphere and the mantle
The layer directly above the lithosphere that behaves like a plastic material
The layer between the crust and the upper mantle
The layer directly below the lithosphere that behaves like a plastic material
