Review Quizs: Earth's Structure Test

Crust

• Earth’s outermost layer, divided into oceanic and continental crust.

• The layer of the Earth where tectonic plates float.

• The solid inner layer of the Earth.

• The gaseous layer surrounding the Earth.

Tectonic Plates

• Large sections of Earth’s lithosphere that move due to mantle currents.

• Small fragments of the Earth's crust that remain stationary.

• Layers of the atmosphere that influence weather patterns.

• Solid rocks that do not change position over time.

Glacial Evidence

• Ice deposits and striations in now-warm regions suggest past continental connections and support continental drift theory.

• Glacial formations are only found in polar regions and do not indicate past climates.

• Continental drift theory is solely based on fossil evidence and not geological formations.

• Ice deposits are a result of volcanic activity rather than glacial movements.

Mantle

• Layer beneath the crust, contains convection currents that move plates.

• Outer layer of the Earth that is solid and rigid.

• The innermost layer of the Earth, composed of iron and nickel.

• A layer of gases surrounding the Earth.

Fossil Evidence

• Similar fossils found on separate continents, supporting continental drift theory.

• Fossils that are only found in one continent, indicating isolation.

• Fossils that show no relation to current species, suggesting extinction.

• Fossils that are identical across all continents, disproving continental drift.

Convergent Boundary

• Plate boundary where plates collide; causes mountains, volcanoes.

• Plate boundary where plates move apart; causes earthquakes.

• Plate boundary where plates slide past each other; causes tsunamis.

• Plate boundary that is stationary; causes no geological activity.

Continental Fit

• The continents are fixed in their current positions.

• The shape of continents suggests they once fit together like a puzzle, supporting continental drift theory.

• Continents are moving apart at a constant rate.

• The continents were formed independently without any connection.

Outer Core

• Solid layer of iron and nickel that generates Earth’s magnetic field.

• Liquid layer of iron and nickel that generates Earth’s magnetic field.

• Gaseous layer of hydrogen and helium surrounding the Earth.

• Crustal layer composed of silicate rocks.

Transform Boundary

• Plate boundary where plates slide past each other; causes earthquakes.

• Plate boundary where plates move away from each other; causes volcanic activity.

• Plate boundary where plates collide; causes mountain formation.

• Plate boundary where plates are stationary; causes no geological activity.

Continental Drift

• The theory that continents have moved over time.

• A process of ocean floor spreading.

• A hypothesis about the formation of mountains.

• The idea that continents are fixed in place.