Big Bang, Earth's Structure, & Early Atmosphere Practice

Front

What is the definition of Atmosphere?

Back

The ocean of gases that surrounds Earth.

Front

What is the Moho?

Back

The boundary separating the crust from the mantle, discernible by an increase in the velocity of seismic waves.

Front

According to the Big Bang Theory, what is happening to the size of the universe?

Back

The universe is expanding.

Front

What part of the earth is a compositional layer of rock that comprises 68% of Earth’s mass?

Back

Mantle.

Front

What process describes the sinking of dense materials to Earth’s center and the rising of less dense materials to the outer layers?

Back

Differentiation.

Front

What is the core of the Earth primarily composed of?

Back

Iron and nickel.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is the significance of seismic waves in understanding Earth's structure?

Back

Seismic waves help scientists determine the composition and state of Earth's interior.

Front

What is the difference between the inner core and outer core?

Back

The inner core is solid, while the outer core is liquid.

Front

What is the primary evidence supporting the Big Bang Theory?

Back

The observed redshift of galaxies and cosmic microwave background radiation.