U4M2L1 Moving Continents
The presence of the same _____ on several continents supports the hypothesis of continental drift.
A. air
B. fossils
C. plants
D. soil
B. fossils
The youngest rocks on the ocean floor are located ____
A. at mid-ocean ridges
B. far from mid-ocean ridges
C. near Asia
D. near continents
A. at mid-ocean ridges
____ are formed when two continental plates collide.
A. Mountain ranges
B. Rift valleys
C. Strike-slip faults
D. Volcanoes
A. Mountain ranges
24. Where does erosion occur in a river?
A. Erosion occurs when a delta forms at the mouth of a river
B. Erosion occurs where a river current slows and drops the soil
C. Erosion occurs when there is deposition
D. Erosion occurs where fast-moving river water picks up soil and moves it down-stream
D. Erosion occurs where fast-moving river water picks up soil and moves it down-stream
Which term is used to describe the cycle which shows conversion of Igneous, Sedimentary and Metamorphic rocks?
A. Carbon cycle
B. Nitrogen cycle
C. Oxygen cycle
D. Rock cycle
D. Rock cycle
The presence of the same _____ on several continents supports the hypothesis of continental drift.
A. air
B. plants
C. rocks
D. soil
C. rocks
Which of the following best explains the age of oceanic crust and ocean-floor features?
A. Crystallization
B. Continental drift
C. Seafloor spreading
D. Subduction
C. Seafloor spreading
____ mountains are formed when the crust is pulled apart by tension.
A. Fault-block mountains
B. Fold mountains
C. Uplifted mountains
D. Volcanic mountains
A. Fault-block mountains
Chemical weathering happens fastest under which conditions?
A. Abundant water
B. Glaciation
C. Low temperature
D. Sparse plant growth
A. Abundant water
_______________________ are NOT changed to sediments by weathering and erosion.
A. Igneous rocks
B. Magma
C. Metamorphic rocks
D. Sedimentary rocks
Magma
Some early mapmakers thought that the coastline of South America matched the coastline of
which of the following?
A. Africa
B. Australia
C. Europe
D. North America
A. Africa
Deep underwater troughs on the seafloor are called ____.
A. Mid-ocean ridges
B. Ocean basins
C. Subduction zones
D. Trenches
D. Trenches
What type of mountains are formed when molten rock erupts onto Earth’s surface and hardens?
A. Fault-block mountains
B. Fold mountains
C. Uplifted mountains
D. Volcanic mountains
D. Volcanic mountains
______________________ occurs when rocks break apart by physical processes.
A. Chemical weathering
B. Electrical weathering
C. Mechanical weathering
D. Seasonal weathering
C. Mechanical weathering
The rock cycle can change the Igneous rock Granite into _____ through metamorphosis.
A. Conglomerate
B. Gneiss
C. Limestone
D. Marble
B. Gneiss
A lack of explanation for continental drift prevented many scientists from accepting the existence of which of the following single supercontinent?
A. Glomar
B. Glossopteris
C. Pangaea
D. Wegener
C. Pangaea
15. What new technology was used to map the seafloor beginning in the 1940s and 1950s?
Echo sounders using sound waves on moving ships
Fault-block mountains occur where _____ are formed.
A. Compression squeezes the crust
B. Compression pulls the crust apart
C. Tension pulls the crust apart
D. Tension squeezes the crust
C. Tension pulls the crust apart
______________________ happens fastest under abundant water conditions.
A. Chemical weathering
B. Electrical weathering
C. Mechanical weathering
D. Physical weathering
A. Chemical weathering
Rocks can change throughout many different processes through the rock cycle. All of the
following change rocks on Earth’s surface except _____.
A. Compaction
B. Deposition
C. Erosion
D. Melting
D. Melting
Name some evidences found on several continents that supports the theory of continental drift.
a) Rock formations
b) Glacial features
c) Coal deposits
d) Fossils
Explain Seafloor Spreading.
1. Hot rock rises
2. Reaches surface and spreads
3. Water cools down hot Magma.
4. It becomes denser.
5. New crust pushes the old crust sideways.
What is the name of the tectonic process which formed the Andes mountains?
A. Faulting
B. Fissuring
C. Subduction
D. Venting
C. Subduction
What is erosion?
The movement of sediments from one place to another.
Explain 3 differences between Intrusive and Extrusive Igneous Rocks.
1. Formation
2. Size of Grain
3. Examples
4. Density