Brainpop
The term used for the light from a star moving away from us....
What is Redshift?
A galaxy consisting of an older central nucleus of stars and two arms of gas, dust, and newer stars extending from the center.
What is a spiral galaxy?
Name 3 ways in which our universe changes.
The universe is:
1. constantly expanding 2. stars are born and die 3. the colors of stars change during their lifetime due to age 4. galaxies collide.
The event that begins a star's main sequence (adulthood)
What is nuclear fusion?
The amount of time it takes for the Sun's light to travel to the Earth.
What is 8 minutes?
The force that causes galaxies to move away from another galaxy.
What is the energy left over from the Big Bang?
The three main types of galaxies in order of the collection of youngest stars to oldest stars
What is irregular, spiral, and elliptical?
The term used to describe the edge or boundary of a black hole - the point at which nothing can escape the dense gravitational pull, not even light
What is the event horizon?
The brilliant explosion of a dying super-giant star
What is a supernova?
186,000 miles per second is a constant speed of ________ in space.
What is light?
The age that scientists believe the universe to be...
What is 14 billion years?
The name of the galaxy nearest to the milkyway, located approximately 2.5 million light years away.
What is the Andromeda galaxy?
The 5 color classifications of stars, in order of hottest to coolest
What is blue, white, yellow, orange and red?
Scientists use this method for measuring distances of stars which compares the displacement of the star's location from 2 opposite points on earth's rotation.
What is parallax?
Make a true statement about parallax from the following:
The (greater/shorter) the parallax, the (longer/shorter) the distance to that object.
What is either (greater and shorter) OR (shorter and longer)?
Astronomers categorize galaxies into a handful of basic shapes. One of the following conclusions is logical:
A) Galaxies all come from the same planetary nebula
B) Galaxies are generally all formed by the same forces
What is B Galaxies are generally all formed by the same forces
The Milky Way galaxy constantly rotates around this in the center.
What is a massive black hole called Sagittarius A?
The main force responsible for the formation of stars and galaxies.
What is gravity?
A measure of a star's brightness over the entire electromagnetic spectrum, as compared to the Sun
What is luminosity?
A graphic/visual comparison of brightness and temperature of different types of stars
What is a Hertzsprung-Russel Diagram, aka a H-R diagram?
One of the following would likely happen to galaxies without gravity:
A) They would contain stronger black holes
B) They would fall apart
What is B They would fall apart?
Name at least 3 things that collectively make up a galaxy, such as the Milky Way.
What are stars, dust, gases, planets, asteroids, meteoroids, comets and other astronomical bodies?
To better understand stars, we compare them to this standard, in terms of light energy and size.
What is our Sun?
Describe the difference between apparent magnitude and absolute magnitude
Apparent magnitude is how bright or dim a star APPEARS from Earth, while Absolute magnitude is how bright the star ACTUALLY is.
The way in which scientists measure the mass of our sun.
What is by it's gravitational effects?