Ocean Review Unit 1

Front

What are the two possible outcomes of a massive star's life cycle after a supernova?

Back

A black hole and a neutron star.

Front

What is the thinnest layer of the Earth?

Back

Crust.

Front

What is the scientific method?

Back

A series of steps used by scientists to solve a problem or answer a question.

Front

How old do scientists estimate the Universe to be?

Back

13.8 billion years old.

Front

What does the nebular hypothesis explain?

Back

It predicts how the Solar System was formed.

Front

What is a black hole?

Back

A region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a neutron star?

Back

A dense stellar remnant composed mostly of neutrons, formed after a supernova.

Front

What is the mantle?

Back

The layer of the Earth between the crust and the core, composed of silicate rocks.

Front

What is the outer core?

Back

The liquid layer of the Earth's core, composed mainly of iron and nickel.

Front

What is the inner core?

Back

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