Plate tectonics Set 2

What role do convection currents play in the movement of tectonic plates?

• They are responsible for the formation of mountains
• They drive the movement of plates by transferring heat
• They cause plates to move in a circular motion
• They create new oceanic crust

Which scientist is credited with proposing the hypothesis of continental drift?

• James Hutton
• Charles Lyell
• Alfred Wegener
• Harry Hess

What evidence did Wegener use to support his hypothesis of continental drift?

• Identical fossils found on separate continents
• The discovery of new oceanic crust
• The formation of mid-ocean ridges
• The existence of tectonic plates

What is the significance of geological similarities between mountain ranges on different continents?

• They show that mountains are formed by erosion
• They indicate that continents are fixed
• They prove that tectonic plates do not move
• They suggest that continents were once connected

Which of the following statements about ancient climate indicators supports the hypothesis of continental drift?

• Ocean currents affecting climate patterns
• Glacial deposits found in tropical regions
• Fossils of tropical plants found in polar regions
• Mountain ranges formed by volcanic activity

In which decade was the concept of seafloor spreading primarily developed?

• 1960s
• 1940s
• 1980s
• 1920s

What is the primary mechanism proposed by the theory of seafloor spreading?

• Continents are fixed in place
• Continents drift due to wind patterns
• Oceanic crust is destroyed at subduction zones
• New oceanic crust forms at mid-ocean ridges

Which geological feature is an example of seafloor spreading?

• The Himalayas
• The San Andreas Fault
• The mid-Atlantic ridge
• The Rocky Mountains

Which of the following best describes the theory of plate tectonics?

• Continents are the only moving parts of the Earth
• The ocean floor is the only area affected by tectonic activity
• The Earth's surface is static and unchanging
• The lithosphere is divided into tectonic plates that float

What type of plate boundary is characterized by plates moving away from each other?

• Subduction zone
• Convergent boundary
• Transform boundary
• Divergent boundary