Understanding Earth's Geological Processes

What is the primary cause of seafloor spreading?

• Subduction of tectonic plates

• Mid-ocean ridges and convection currents

• Erosion of oceanic crust

• Volcanic eruptions on land

Which type of rock is formed from volcanic lava?

• Sedimentary rock

• Metamorphic rock

• Igneous rock

• Mineral rock

What process is responsible for the sideways and downward movement of tectonic plates?

• Erosion

• Subduction

• Crystallization

• Sedimentation

Which of the following is evidence for continental drift?

• Magnetic reversals

• Fossils found on different continents

• Formation of igneous rocks

• Subduction zones

What is the formula for density?

What type of rock is formed from sediments and sedimentation?

• Igneous rock

• Metamorphic rock

• Sedimentary rock

• Mineral rock

Which geologist proposed the continental drift hypothesis?

• Charles Darwin

• Alfred Wegener

• James Hutton

• Louis Agassiz

What is the main cause of Earth's magnetic field?

• Movement of tectonic plates

• Electrical currents in the iron core

• Solar radiation

• Ocean currents

Which process in the rock cycle involves the rearrangement of rocks under deep pressure?

• Crystallization

• Erosion

• Metamorphism

• Sedimentation

What does subduction cause in terms of the seafloor?

• Formation of new land

• Loss in seafloor

• Creation of mid-ocean ridges

• Increase in ocean depth