What is a graphical tool that astronomers use to classify stars?

• H-R Diagram

• Galaxy Diagram

• Sun Diagram

• Sun Evolution Diagram

A nebula can move onto the main sequence, what two categories (or paths) can a nebula develop into?

• Medium Sized Stars and Dwarf Stars

• Average Sized Stars and Massive Sized Stars

• Big Path and Little Path

• Cool Stars and Warm Stars

Tags

NGSS.HS-ESS1-3

What is very large group of stars held together by gravity; a few million to a few billion stars?

• the universe

• a galaxy

• a solar system

• a binary star

Tags

NGSS.MS-ESS1-2

Rank these colors from hottest to coldest based on the H-R Diagram scale: Yellow, Blue, Red, White

• Blue, White, Yellow, Red

• Red, Yellow, White, Blue

• White, Blue, Red, Yellow

• Yellow, Blue, White, Red

What characteristic of stars is shown on the left side of the H-R Diagram

• luminosity
• temperature
• color
• size

What characteristic of stars is shown on the bottom of the H-R Diagram?

• luminosity

• temperature

• color

• size

What characteristic of stars is related to temperature and typically shown in the H-R Diagram?

• movement

• distance

• color

• shape

What are the units typically shown in the H-R Diagram that are a unit of temperature but are not associated with degrees?

• Celsius

• Fahrenheit

• Kelvin

• light years

What are the two options for a Massive Sized Star at the end of its life?

• becoming a dense core of neutrons

• becoming a neutron star or a black hole

• crying

• transforming into CO2

At the end of a star’s life cycle, it releases gas into space that can be recycled into new stars. What do scientists call the starting point of any new star?

• nebula

• supernova

• protostars

• white dwarf