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Structure of the Universe
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As a solar system forms, the outer disk will form
Gas giants
As a solar system forms, the inner disk will form
terrestrial planets
Describe how a planet forms
Dust collides and stick together to slowly increaase in size until they become a planet.
Formation of a solar system, Step #, Titles
Step#4, Planets form
Formation of a solar system, Step #, Titles
Step # 3, Planetismals form
Formation of a solar system, Step #, Titles
Step #2, The Sun forms
Formation of a solar system, Step #, Titles
Step #1, The Solar Nebula Collapses
The law of universal gravitation states
that all objects in the universe attract each other through gravitational force.
Kepler's Third Law
The square of the orbital period is proportional to the cube of the planet's average distance from the sun
Kepler's Second Law
As a planet moves around its orbit, it sweeps out equal areas in equal times
Kepler's First law
Each planet orbits the sun in an ellipse with the sun at one focus
How could you increase gravitational force between objects?
increase their mass or decrease the distance (get closer)
An orbit is the _____ that a body follows as it travels around another body in space.
path
Gravity is a force of ______between objects that are due to their _____ and ______
attraction, mass, distance
What causes seasons
 
all of these
 
intensity of sunlight
 
number of daylight hours
 
axial tilt
As Earth travels around the sun, the area of sunlight in each hemisphere changes. What is it called when one hemisphere has the most amount of sunlight and the other hemisphere has the least amount of sunlight?
solstice
As Earth travels around the sun, the area of sunlight in each hemisphere changes. What is it called when both hemispheres have equal amount of sunlight?
equinox
A pattern of temperature and other weather trends is called a
season
Areas on Earth's surface that are tilted away from the sun,
have less than 12 hours of light a day
Earth being tilted on it axis affects temperature in 2 ways
direct or in-direct sunlight & hours of sunlight
Describe how Earth rotates on it axis.
It is tilted 23.5 degrees
What kind of orbit does Earth have?
elliptical or ellipse
A full revolution around the sun is called a
year
How long is an Earth year?
365 1/4 days
The motion of a body that travels around another body in space is called
revolution
How long is an Earth day?
24 hours
Why is Earth's rotation important?
to measure time
As the Earth rotates, the side facing away from the sun is called
night time
As the Earth rotates, the side facing the sun is called
daytime
How is a day measured?
It is the time it takes a planet to omplete one full rotation on its axis
Rotation is
the spinning of a body on its axis
What it the imaginary line that the Earth rotates on?
axis
What is the imaginary line that runs from the North Pole to the South Pole?
axis
What is the structure of the universe?
galaxies and voids
What is Ms. Lena's favorite drink?
COFFEE!!!! of course lol
What are the names of Ms. Lena's daughters?
Ayah and Rayanne
What is the space in the universe called? The space between galaxies?
void
What is a light-year?
the distance light travels in a year!
What force holds the solar system, galaxies, and the universe together?
Gravity
What force holds the solar system, galaxies, and the universe together?
Gravity
What is the composition of galaxies (it is not chocolate!)?
stars, gas and dust
Based on the chart, is red giant hotter or cooler than our sun?
cooler
Based on the chart, is a blue star hotter or cooler than our own sun?
hotter
What two gases are stars made up of?
Helium and Hydrogen
Which type of planet has a rocky composition?
Terrestrial
Which type of planets have a smaller size?
Terrestrial
Which type of planets are less dense?
Gaseous planets
What are the two types of planets?
Terrestrial and Gaseous
What is a planet?
Any large body that orbits the sun/star
What are the parts of a solar system?
star/sun, all objects that orbit the sun/star
Why is the Earth special?
liquid water
As related to science, what does the word composition mean?
made up of
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