Topic 3 (Solar System) Flashcards
Learn about ellipses and how the planets orbit the sun.
How long does it take for the earth to travel around the sun (revolution)
365.26 Days
Compared to our sun the star Beltegeuse is
Larger, colder, and more luminous
Earth, the sun, and billions of stars are contained within
The milky way galaxy
How do Galaxies move
Galaxiess move away from one another
Which planet has the longest period of rotation?
Venus
What is the Big Bang Theory?
The Theory that the unverse started out by exploding and expanding
How do we round density?
We round the hundreths place up
How do we calculate density?
Mass over volue
M/V= X g/cm3
Compared to other stars, the group of stars that have low surface temperature and low luminosity are
Red Dwarfs
Compared to earths solar system, the universe is inferred to be
older and larger
The smaller stars in the main sequence are
Cooler and less luminous
Which process combines lighter elements into heavier elements?
Fusion
Most scientists think the milky wat galaxy is
one of billion galaxies in the universe
What happens to the suns gravitational pull to a planet when the planet is farther away?
The gravitational attraction becomes weaker
Billions of stars in the same region are called
galaxies
