THE FAMILY OF STARS

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Funded by Title V HIS Grant at LAMC and U.S Department of Education

Corresponds to Ch 6in book Astro by Seeds

Prepared by: Julissa Garcia, Aramik Yousefian

Hagop Hadjinian, Tatevik Grigoryan

Activity director:Lilit Haroyan

Faculty Advisor:Richard Rains

1. What does the H-R Diagram say about stars?

HINT

Their brightness and volume

Their brightness and temperature Their Weight and volume

Their temperature and volume

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HINT

Their brightness and volume

Their brightness and temperature Their Weight and volume

Their temperature and volume

1. What does the H-R Diagram say about stars?

Correct!next

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1. What does the H-R Diagram say about stars?

IncorrectThe HR diagram places the stars according to their temp and brightness, as well as mass.

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It’s labeled on the bottom and left side of the H-R Diagram

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2. A Parsec is…

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A second of parting

A second of partyingAn imaginary galaxies’ distance

to an object’s parallax is 1 second of an arc

An imaginary star’s distance to an object’s parallax is 1 second

of an arc

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HINT

A second of parting

A second of partyingAn imaginary galaxies’ distance

to an object’s parallax is 1 second of an arc

An imaginary star’s distance to an object’s parallax is 1 second

of an arcCorrect!next

2. A Parsec is…

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2. A Parsec is…

IncorrectParsec is an abbreviation of “parallax of one sec”, which corresponds to the distance of a star to the sun.

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It’s a distance

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3. A visual binary star system is:

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Twin stars separated at birth

Two stars visible in a telescope Stars with the same mass

Two stars emitting binary codes

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HINT

Twin stars separated at birth

Two stars visible in a telescope Stars with the same mass

Two stars emitting binary codesCorrect!

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3. A visual binary star system is:

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3. A visual binary star system is:

IncorrectVisual binaries are two seeable stars from a telescope.

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You see these stars visibly

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4. Stars that orbit each other are called?

HINT

Visual star system

Eclipsing binary system Love birds

Binary stars

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HINT

Visual star system

Eclipsing binary system Love birds

Binary stars

Correct!next

4. Stars that orbit each other are called?

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4. Stars that orbit each other are called?

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Incorrect Binary stars are known for orbiting each other, and the smaller the orbit the larger the mass of the stars.

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Two stars…

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5. What sole factor determines a stars place on the Main Sequence?

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Mass

Luminosity Temperature

Age

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HINT

Mass

Luminosity Temperature

Age

Correct!next

5. What sole factor determines a stars place on the Main Sequence?

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5. What sole factor determines a stars place on the Main Sequence?

Incorrect As the stars get more mass, they start to move up on the Main Sequence bar.

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Matter in an object…

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6. What method do we use to find Star’s Masses?

HINT

Luminosity

Electricity Volume Temperature

Binary stars

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HINT

Luminosity

Electricity Volume Temperature

Binary stars

Correct!next

6. What method do we use to find Star’s Masses?

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Incorrect Binary stars are the main way astronomers are able to detect a star’s mass.

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6. What method do we use to find Star’s Masses?

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Two stars

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7. When a stars is so bright what happens eventually?

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It runs out of energy

It rotates faster None of the above

It becomes hotter

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HINT

It runs out of energy

It rotates faster None of the above

It becomes hotter

Correct!next

7. When a stars is so bright what happens eventually?

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7. When a stars is so bright what happens eventually?

Incorrect A star becomes hotter, brighter, and more massive that eventually it will use all of its energy and run out.

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It’s using all of its energy…

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8. Eclipsing binaries are….

HINT

Twin stars separated at birth

Two stars visible in a telescope One star blocking another

Two stars emitting binary codes

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HINT

Twin stars separated at birth

Two stars visible in a telescope One star blocking another

Two stars emitting binary codesCorrect!

next

8. Eclipsing binaries are….

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8. Eclipsing binaries are….

HINT

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Incorrect Eclipsed pair of stars…

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Eclipsing….

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HINT

Less mass

More mass Longer years

Less energy

9. Binary stars with large orbits mean….

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HINT

Less mass

More mass Longer years

Less energy

Correct!next

9. Binary stars with large orbits mean….

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9. Binary stars with large orbits mean….

IncorrectAs orbits get smaller, mass increases

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Larger orbits mean less heat…and less energy…

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10. In nuclear fusion Hydrogen and ____ combine to make ____.

HINT

Uranium, helium

Oxygen, water Helium, hydrogen

Hydrogen, helium

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HINT

Uranium, helium

Oxygen, water Helium, hydrogen

Hydrogen, helium

10. In nuclear fusion Hydrogen and ____ combine to make ____.

Correct!next

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10. In nuclear fusion Hydrogen and ____ combine to make ____.

IncorrectH+H= Helium (Nuclear Fusion)

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Two of the same element adds up…

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