Slides 2,3,4,5,7
What is Cosmology?
What are Astronomers?
What are Cosmologists?
Study of the origin structure, and future of universe.
They study planets, stars, and galaxies.
They study the whole universe.
If an object is moving towards you it is...
If an object is moving away from you it is...
Shortens, blue
Lengthens, red
What was the model where the sun is in the middle?
What are the orbits actually?
Who was Kepler?
What did Newton explain?
Heliocentric model.
Ovals
He improved Copernicus' model.
Gravity. (Why planets circled around the sun.)
Orion
Lyra
"The Hunter"
The Harp" Contains the star Vega.
What is a Super Giant?
Burns hydrogen and expands, extremely bright, but not super hot, hotter the bigger it is, becomes super giant when out of hydrogen.
What are some models of the universe?
Steady State Theory.
Oscillating Theory.
Big Bang Theory.
Parallel Universe Theory.
Center of the Universe? Why?
No. The universe is infinite.
Who was Galileo Galilei?
What did he invent?
What did he see with his invention?
He proved that the Heliocentric model was actually something.
He invented the telescope.
He saw new stars, mountains and valleys on the moon, the moons orbiting Jupiter, the rings of saturn...
What is contained in the solar system?
How many stars are estimated in the whole universe?
What are stars made out of?
Sun makes up 99%, Planets, Moons, Asteroids, Comets
400 billion stars.
Huge ball of plasma and is held together by gravity.
What is a White Dwarf?
What is a Black Dwarf?
What are Hyper Giants?
Burns helium instead of hydrogen, extremely hot and very small
All energy is gone, does not shine, or is very dim, not enough energy for fusion
Extremely large stars, biggest in Universe, doubles in size every 10,000 years
What are some facts about the Big Bang Theory?
Big explosion.
14 billion years ago.
Entire universe began to expand everywhere at the same time, and still is today.
The first model was Geocentric.
What is a constellation?
And what can they do?
Stars that form a geometric pattern, map of the sky, named by the ancient Greeks, can see different constellations at different times of the year, and help people navigate
Temperature and color.
Hotter = Brighter
Colder = Duller
Hottest = Blue
Coolest = Red
What is a Super Nova?
Explosion of stars, either by expansion or implosion, gamma rays, intense heat, creation of elements, possible black hole
How long did it take for the Big Bang to expand, and how long was it across?
It took about 3 sec - 20 minutes.
It was 1.3 trillion miles across.
Earth is still, and is the center of the universe.
Celestial bodies move in perfect circles.
Planets, moon, sun also set in in separate spheres that moved slower.
Ursa Minor
"Little Bear"
Also known as the Little Dipper
Brightest star is Polaris (North Star)
What is the life cycle of a star?
Nebula, Protostar, Giant or Super giant, White Dwarf, Black Dwarf, Supergiants, Supernova *can become either*Black Hole, or Neutron Star (Pulsar)
What is a black hole?
Formed after implosion of stars, light cannot escape, strongest gravity in universe
What is some evidence for the Big Bang and describe them.
Doppler effect - expansion of the universe
Microwave radiation - Energy that is given off by all objects in space. The energy could be left over by the Big Bang.
Who created the Geocentric models?
Aristotle and Ptolemy
Ursa Major
“The Big Bear”
Also known as the Big Dipper
Points to Polaris
What is a Nebula?
What is a Protostar?
Huge cloud of gas and dust
Young star not shining
Are you excited for summer break?
Any answer is correct.
Except your mom.