Unit 2: Earthquakes, Tsunamis & Volcanic Eruptions Review

Front

What tectonic plate is moving northward with Australia?

Back

India is moving northward with Australia as part of the same tectonic plate.

Front

What are the main layers of the Earth?

Back

The Earth is composed of four main layers: the crust, mantle, outer core, and inner core.

Front

What is the composition of the Earth's inner core?

Back

The inner core is composed primarily of solid nickel and iron.

Front

What is a volcanic eruption?

Back

A volcanic eruption is the release of magma, gas, and ash from a volcano.

Front

What is a tsunami?

Back

A tsunami is a series of ocean waves caused by large underwater disturbances, such as earthquakes or volcanic eruptions.

Front

What is the Mid-Atlantic Ridge?

Back

The Mid-Atlantic Ridge is a divergent tectonic plate boundary located along the floor of the Atlantic Ocean.

Front

What is the significance of magnetic field reversals?

Back

Magnetic field reversals are significant as they provide evidence for the theory of plate tectonics and seafloor spreading.

Front

What is the difference between the lithosphere and asthenosphere?

Back

The lithosphere is the rigid outer layer of the Earth, while the asthenosphere is a semi-fluid layer beneath it that allows for tectonic movement.

Front

What is the Richter scale?

Back

The Richter scale is a logarithmic scale used to measure the magnitude of earthquakes.

Front

What causes earthquakes?

Back

Earthquakes are caused by the sudden release of energy in the Earth's crust, often due to tectonic plate movements.