Universe Test Review

List the components of the universe from smallest to largest...

• planet, star, nebula, galaxy

• galaxy, star, planet, nebula

• nebula, star, planet, galaxy

• galaxy, nebula, star, planet

Stars are made mostly of which two elements?

• Selenium and sodium

• Astatine and arsenic

• Hydrogen and neon

• Hydrogen and helium

Galaxies are classified into all of the following types EXCEPT:

• crescent

• spiral

• irregular

• elliptical

Scientists study _______ to gain information like composition & temperature of distant stars.

• parallax

• microscopes

• electromagnetic spectrum waves

• ESP

Most objects outside of our galaxy have red shift. This is evidence that most objects are...

• hotter than our Sun

• moving away from Earth

• older than our solar system

• moving toward Earth

What type of galaxy do we live in?

• spiral

• irregular

• crescent

• elliptical

What determines how long a star will live?

• It's color

• It's mass

• It's diameter

• It's distance from the Sun

What characteristics does the H-R Diagram use to classify stars?

• luminosity and brightness

• color and temperature

• color and size

• luminosity and temperature

What type of star is the hottest in temperature?

• blue stars

• red giants

• yellow stars

• orange stars orange stars

A star's wavelengths can tell all of the following information EXCEPT:

• temperature

• star movement

• number of planets

• chemical composition