Cycle of Stars

Which term best describes a stellar nursery?

• A flaming ball of gas

• A cloud of gas and dust

• A cloud of thousands of small, young stars

• A star system with planets and moons

In the movie, Tim refers to baby stars as "protostars." What can you infer about the prefix "proto-?"

• It means "last" or "after"

• It means "infinite" or "everlasting"

• It means "first" or "before"

• It means "large" or "huge"

Tags

NGSS.HS-ESS1-3

Place the following stages in the life of a low-mass star, like the sun, in order: A) Red giant; B) White dwarf; C) Main sequence star

• C, A, B

• A, C, B

• B, A, C

• B, C, A

Tags

NGSS.HS-ESS1-3

Which of the following describes the process of nuclear fusion, as it occurs inside our sun?

• Hydrogen and oxygen atoms combine to make water molecules.

• Helium atoms split apart to form hydrogen atoms

• Water molecules break apart into hydrogen and oxygen atoms

• Hydrogen atoms combine to make helium atoms.

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What effect does gravity have on stars?

• It allows stars to break free of their galaxies

• It helps break helium atoms apart inside of stars

• It forms stars from clouds of gas and dust, and causes them to ignite

• It causes stars to swell from white dwarfs to red giants

Tags

NGSS.HS-PS2-4

What is a supernova?

• A type of black hole

• An incredibly dense but small star

• A star that is large and not dense

• The explosion of a large star

How does a white dwarf compare to our sun as it exists now?

• It has a similar mass, but is much denser.

• It has a larger mass, but is less dense.

• It has more mass, and is more dense

• It has less mass, and is less dense.

What will a star that's 1,000 times as massive as the sun ultimately become?

• A white dwarf

• A black hole

• A planetary nebula

• A red giant

Which of the following depicts a planetary nebula?

• 
• 
• 
• 

How is a neutron star different from a regular star?

• It emits electromagnetic pulses

• It has an almost infinite density

• It burns brighter than a galaxy with a billion stars

• It has less mass and greater gravity