Stars, Galaxies, Universe

Stars 1

100

The sun is classified as a __________

What is a dwarf star?

200

Name three characteristics to classify stars

color temperature size mass composition brightness

300

The difference between apparent brightness and absolute brightness.

What is Apparent: How bright a star appears to be as seen from Earth?

What is Absolute: The actual brightness a star would have if it were at a standard distance to Earth

400

Star Dibrita and Star Brito appear to have the same brightness. Star Brito is farther away. Which star has more absolute brightness and explain why.

Star Brito, if they appear to have the same brightness and Brito is farther away, it would have a more absolute brightness.

500

 a light year is----

What is the distance light travels through space in one year?

600

Instrument which breaks down the light given off by a star into all its colors

What is a spectroscope

700

chunk of metal or stone that has entered Earth's atmosphere and lights up due to friction as it passes through Earth's atmosphere

What is a meteor?

stars 2

100

The apparent change in position of an object when viewed from different place.

What is parallax?

200

Star Destiny is 25 light years away from Earth and Star Kristen is 37 light years away from Earth. Which star would have a greater parallax and why?

Star Destiny, because the closer a star is to Earth, the more it appears to move

300

How a star appears 

What is apparent magnitude?

400

The true magnitude of a star

What is absolute magnitude?

500

the hottest stars

What color is blue

600

the wavelengths on a spectroscope demonstrate this when an object is moving away from the earth

What is redshift

700

chunk of metal or stone that has come through Earth's atmosphere and has landed on Earth

What is a meteorite?

stars 3

100

 the "cooler stars" are

What color are reddish?

200

Star Catalina is a "cooler star" (reddish) but has a very high absolute brightness. What can you infer about Star Catalina?

It is very big

300

Fill in the blanks In general Hotter stars have a _________ brightness In general Bigger stars have a __________ brightness

What is high and high?

400

Star Nikhil is a very HOT star and has a blue color, however does now have the highest absolute brightness. What can you infer about Star Nikhil?

small star

500

a cloud of gas and dust with great volume

What is a nebula?

600

instrument that bends light through lenses to make objects look bigger. uses convex and concave lenses.

What is a refracting telescope?

700

chunk of metal or stone moving towards Earth's atmosphere

What is a meteoroid?

stars 4

100

How does a star form from a nebula? Explain in detail.

Gravity pulls the gas and dust together forming a protostar, when the contracting dust becomes dense and not nuclear fusion begins and a star is formed.

200

Supernova

The death explosion of a star

300

What factor determines how long a star lives?

mass

400

Why do bigger stars live shorter lives than smaller stars?

They burn their fuel faster.

500

____________________ means "around the pole"

What is circumpolar?

600

the scientific study of the stars

What is Astronomy?

700

icy chunk of frozen gases, water, and dust that orbits the Sun

What is a comet?

stars 5

100

What is a neutron star? What does it result from

remains of high mass stars from the explosion

200

Why do some stars become white dwarfs and others neutron stars or black holes.

depends on the mass of star

300

What is a black hole? What does it result from?

intense body of gravity, a supernova exploding star

400

What is a galaxy? Explain 3 types of galaxies

cluster of stars, gas, and dust bound together by gravity Spiral: bulge in center arms spiral outwards, young bright stars on arms with ga and dust, older stars in center-little gas and dust Elliptical: flattened ball of stars, older stars, little gas and dust Irregular: Random pattern, bright young stars, gas and dust

500

a viewer that uses mirrors

what is a reflecting telescope?

600

the practice of finding guidance from stars

What is Astrology?

700

made of irregularly shaped pieces of rock, metal, and dust

What is an asteroid?