Star and the H-R Diagram
The main element that makes up the vast majority of a star's mass
What Is Hydrogen
The elliptical path our planet takes as it travels around the Sun
What is Earths Orbit
This consists of the Sun and everything that is bound to it by gravity
What is the Solar System
A huge collection of gas, dust, and billions of stars and their solar systems
What is a Galaxy
eight distinct phases, divided into primary and intermediate stage
What are the phases of the moon
a massive, glowing ball of extremely hot gas that produces its own light and heat through a process called nuclear fusion
What is a Star
Rotation, Revolution, and Precisson
What are the three ways the earth moves
the rocky, solid planets closest to the Sun
What are Terrestrial Planets
This is created when a big star explodes
What is a Black Hole
these are the exceptionally high and low tides that occur when the Sun, Moon, and Earth align
What are Spring tides
the absolute magnitude and temperature of stars
What is a H-R Diagram
These are caused by the tilt of its axis combined with its orbit around the Sun, rather than its daily rotation
What are Seasons
the theory that says the solar system formed from a rotating cloud of dust and gas
What is the Nebula Theory
Spiral, Elliptical, Barred, and Irregular
What are the four types of galaxies
the moon’s orbit crosses the plane of the ecliptic
What is an eclipse
The star most common on the H-R diagram
What are Red Dwarfs
The hemisphere experiencing this season is tilted toward the Sun
What is Summer
approximately 4.6 billion years ago
What is the solar systems birth
The Milky Way is this type of galaxy
What is a Spiral Galaxy
This happens when the moon gets brighter
What is Waxing
O, B, A, F, G, K, and M
What are the 7 types of stars
This is approximately 23.5 degrees
What is Earth's Tilt
the massive planets in the outer solar system primarily composed of hydrogen, helium, and icy elements
What are the Jovian Planets
the law that tells us how fast the universe is expanding
What is Hubble's Law
When more than half of the moon is illuminated
What is a Gibbous