Our Solar System PAGE 16
SWBAT: Determine the difference between a Jovian and Terrestrial Planet and provide examples of each type of planet.
DO NOW: Describe how many minutes later each day the moon rises DO NOW: Describe how many minutes later each day the moon rises. Describe how much later the tides are each day.
The Planets
TERRESTRIAL PLANETS TERRESTRIAL PLANET EXAMPLES rocky planet that is composed primarily of silicate rocks or metals Mercury Venus Earth Mars
JOVIAN PLANETS JOVIAN PLANETS EXAMPLES gas giant (sometimes also known as a Jovian planet) is a large planet that is not primarily composed of rock or other solid matter. Jupiter Saturn Uranus Neptune
The total mass of all the asteroids is less than that of the Moon. rocky objects with round or irregular shapes lie in a belt between Mars and Jupiter The total mass of all the asteroids is less than that of the Moon.
ASTEROID BELT
Asteroid Belt: located roughly between the orbits of the planets Mars and Jupiter. It is occupied by asteroids or minor planets.
shooting stars
METEORITE: A meteorite originates in outer space as a solid piece of debris from such sources as asteroids or comets that survives its impact with the Earth's surface.
only visible when they are close to the sun
Explain the difference between the geo- and helio-centric models of the solar system. Helio-centric Geo-centric Earth- centered Sun- centered
When does a planet move slowest in its orbit? When furthest from Sun When does a planet move fastest in its orbit? When closest to Sun
Draw a line across the table between the terrestrial and jovian planets and label.
Which are more dense? Jovian or terrestrial
Which have more Mass Jovian or Terrestrial ?
Which have longer periods of revolution? Jovian or terrestrial
Which are larger in size on average ? Jovian or terrestrial
Which planet has the longest day? Venus
Which planet has the longest year? Neptune
Which are more dense Terrestrial or Jovian?
Which have more moons ? Jovian or terrestrial
Which have longer periods of revolution? Jovian or terrestrial
Which are larger in size on average ? Jovian or terrestrial
Which planet has the longest day? Venus
Which planet has the longest year? Neptune
EXIT: Determine the distance of the asteroid belt using your ESRT Homework: Begin solar system data handout
Eccenticity SWBAT: Calculate the eccentricity of a planets orbit to determine if the orbit is more round or more elliptical.
Do Now: Provide how we know today that our solar system supports a heliocentric model.
Shape of the Earth’s Orbit: Our Earth’s orbit is a slightly eccentric ellipse. An eccentricity very close to zero (0.017) Question: How do we know? Eccentricity: how flat an ellipse is number between 0 and 1 -the flatter the ellipse, the higher the eccentricity (number closer to 1) Lower eccentricity more round orbit closer to 0
Calculate the eccentricity of the ellipse below: length of major axis Formula: eccentricity = distance between foci length of major axis
A circle has an eccentricity of__________, and is least eccentric. The more oval an ellipse is the ______Eccentric it is.
Which planet has the least perfectly circular orbit? Mercury
Which planet has the most perfectly circular orbit? Venus
EXIT: Describe why eccentricity determines the length of our seasons? Begin eccentricity practice handout
Force of Gravity and Velocity