Vocab Characteristics of a  Life of a   Systems & Galaxies Random

Vocab – 100 All of the different types of electromagnetic waves is the ____________. Electromagnetic spectrum

Vocab Galaxies that appear to have a buldge in the middle and arms that sprial outward are called _________. Spiral Galaxies

Vocab What are constellations? Imaginary pattern of stars

Vocab- 400 Astronomers use this to classify stars and to understand how stars change over time. H-R Diagram

Vocab- 500 This theory says that the universe formed in an instant, billions of years ago, in a HUGE explosion. Big Bang Theory

Characteristics What does the brightness of a star depend on? (hint: 2 factors) Size and temperature

Characteristics parallax How do astronomers measure the distances of nearby stars?

Characteristics What is the difference between apparent brightness and absolute brightness? DOUBLE JEOPARDY Apparent: brightness seen from Earth Absolute: brightness if star is a standard distance

Characteristics- 400 What are the 5 characteristics to classify stars? Color Temperature Size Composition brightness

Characteristics Using the H-R Diagram, which star is hotter than the sun? -Regulus or -Alpha Centauri B Alpha centari B

Life of a Star – 100 What factor tells how long a star will live? Tell me about it. (think of Santa running….who could run longer, you or Santa??) Mass: the smaller the longer it lives or the bigger the shorter it lives

Life of a Star What is the first/earliest stage of a star? (hint: NOT nebula) Protostar : after nuclear fusion takes place from a nebula

Life of a Star After a high mass star runs out of fuel it explodes suddenly….what is this stage called? Supernova

Life of a Star Put the stages in order for a low/medium star: White dwarf Red giant Planetary nebula Black dwarf Protostar Star nebula

Life of a Star Put the star stages in order for a HIGH mass star: Neutron star Super Red Giant Nebula Protostar Black hole Super nova High mass star DOUBLE JEOPARDY

Star Systems & Galaxies What is a star system? Groups of two or more stars

Star Systems & Galaxies Star systems that have two stars are called double stars or ___________. Binary Stars

Vocabulary When one star periodically blocks the light from another star it is called: __________ __________. Eclipsing Binary

Vocabulary There are two types of star clusters: open and globular. Explain them. Open clusters: loose, disorganized, only a few thousand Globular: large groupings, older, millions of stars

Vocab There are 3 different types of galaxies: spiral, elliptical, and irregular. Explain them. Spiral: pinwheel shaped; bulge in middle; young stars, gas & dust Elliptical: round/flattened billions of stars; little gas and dust; old stars Irregular: smaller; bright young stars; lots of gas and dust to form new stars

Random What color is the “coolest” stars? A.Red B.Yellow C.Blue

Random What is a light year and what is it used for? the distance that light travels in a year; distances between stars

Random How does the gas and dust in a nebula become a protostar? A star is born when the contracting gas and dust from a nebula become so dense and hot that nuclear fusion starts

Random After a star runs out of fuel it becomes what 3 types of stars? Word bank: Supergiant Planetary nebula White dwarf Black hole Supernova Neutron star 

Random What galaxy is our solar system in (type and name)? Milky Way - spiral