Structure of the Solar System
What compound on Earth makes it so special?
liquid water
What 2 gases are stars mostly composed of?
Hydrogen and Helium
Where are all stars born?
Nebulae
What process starts the life of a star?
Gravity condenses dust and gas in a nebula
True or false: The sun is 80% through its lifecycle
false
Name the terrestrial planets.
Mercury venus earth mars
What process causes stars to release energy?
Nuclear Fusion
During fusion, Hydrogen fuses into what element?
Helium
A star's lifecycle depends on what characteristic?
Mass
The distance light can travel in one year is called a _____.
Lightyear
Name the gas giant planets.
Jupiter, Saturn, Uranus Neptune
In our sun, where is matter converted into energy?
The core
What type of star is our sun?
Main sequence star
What region of the HR diagram is our sun in?
Main Sequence
Where do we get the measurement of one AU (astronomical unit)
THe average distance between the Earth and the Sun
What Galaxy is our solar system located within.
The Milky Way Galaxy
What type of star is Deneb?
Super Giant
What are the final stages or a low mass star's lifecycle?
White Dwarf or black dwarf
What 2 factors about stars are plotted on an HR Diagram?
Temperature and Luminosity
This object has a highly elliptical orbit, and is often described as a dirty snowball because of its composition
comet
This is the Earth's only natural Satellite
The moon!
Which star is most likely the hottest based on its color: a red star, a blue star, or an orange star?
A Blue Star
What are the final stages in the life cycle of a high mass star?
black hole or neutron star
Will our sun reach the end of its lifecycle through a supernova?
No! (it doesnt have enough mass)
If a planet had a perfectly circular orbit, what would its eccentricity be?
0