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Our Solar System

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by

Tom Klus

on 23 April 2017

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Transcript of Our Solar System

Our Solar System
The Sun
Structure of the Solar System
Gravity and Orbit
Star
- an object that creates own energy
What is the Solar System?
What is Gravity?
Average size star - about 864,000 miles in diameter - about one millions Earths would fit inside
What is the Sun?
Astronomical Unit
- Distance from Earth to Sun = about 93 million miles
Sun's Mass - makes up 99.8% of all mass in our solar system
The Sun's Parts
Core
- energy produced
Radiation Layer
- moves energy produced in all directions - Can take millions of years to escape this layer
Convection Layer
- different density gases move like boiling water - energy spends about 1 week
Photoshpere
- visible surface - looks solid but is layer of gases
Chromoshere
- inner layer of atmosphere
Corona
- Outermost atmosphere - shapes depend on temperature of photosphere
Solar Flares
- bursts of heat and energy that stretch from the corona into space
can cause electronic disruptions
cause the northern and southern lights
How does the Sun produce energy?
E=MC
2
Energy
Mass
Speed of
Light
A little bit of mass makes a lot of energy
sun about 71% hydrogen, 21% helium
hydrogen atoms collide and combine to form helium
small amount of mass lost and converted to energy
Fusion
Sun and the objects that orbit around it
8 planets and their moons
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
Moon
- an object that circles around a planet
Mercury and Venus - no moons
Jupiter - over 63 moons
Satellite
- another term for a moon
Moons are natural satellites
Man made satellites circle Earth
What is a Moon?
Dwarf planets
over 3,000 satellites orbiting the earth
Smaller Objects in the Solar System
Asteroid
- Rock that revolves around sun -
most in asteroid belt between Mars and Jupiter
Comet
- mixture of frozen gases, ice, dust, and rock
as comet approaches sun, the sun's energy melts the frozen core causing a tail of vapor and dust that can extend millions of miles away from the sun
Meteoroids
- dust to bolder sized particles that move through the solar system
Meteors
when burn through Earth's atmosphere
Gravity
- the attraction, or pull, between any two objects
affected by mass of each object and the distance between them
acts over a distance
distance the force of gravity
What Keeps Objects in Orbit?
Orbit
- the path one object takes around another
Result of 2 forces acting together
Gravity
- the pull between 2 objects
Inertia
- the tendency of a moving object to continue in a straight line
When the forward motion or inertia and gravity are balanced an object will orbit another
Ellipse
- a nearly circular orbit
Full transcript