Structure of the Universe Unit Test Review

Front

What type of star is the sun?

Back

The sun is a Main Sequence Star.

Front

What does the red-shift of light emitted by stars tell us about our universe?

Back

The red-shift indicates that the universe is expanding.

Front

What term do we use to describe the brightness of a star?

Back

The brightness of a star is referred to as Luminosity.

Front

What is a characteristic of a star?

Back

A star is made of plasma and does not have a solid surface.

Front

Where are the majority of asteroids in the Solar System found?

Back

The majority of asteroids are found in the Kuiper belt at the outside edge of the solar system.

Front

What is the process by which a star 'burns' hydrogen to produce light?

Back

This process is called nuclear fusion.

Front

What is the main component of a star's composition?

Back

Stars are primarily composed of hydrogen.

Front

What happens to a star when it exhausts its hydrogen fuel?

Back

It can expand into a Red Giant or undergo a supernova explosion.

Front

What is the significance of a star's color?

Back

A star's color indicates its temperature; blue stars are hotter than red stars.

Front

What is a supernova?

Back

A supernova is a powerful explosion that occurs at the end of a star's life cycle.