2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt AstronomersEllipsesMISC. Earth’s Orbit FJ

First to use a telescope To view the night sky

Galileo

Explained the forces Involved for an Orbiting body

Newton

Collected 20 years of data for a Danish King, Had his nose cut off

Tycho Brahe

1st to put forth the Heliocentric model

Copernicus

Suggested the planets Revolve around the sun in elliptical orbits

Kepler

Measurement of how non- circular an ellipse is

eccentricity

All planet’s orbits look like this shape

circles

The more elliptical the closer The eccentricity is to the number _______

one

The ____ is located at one of the foci of the planet’s orbits

sun

The formula for the eccentricity of an ellipse

Focal distance divided by The major axis

Direction of earth’s orbit

counterclockwise

First day of summer and winter

solstice

Number of hours of sun The north pole gets on An equinox

12

Which 2 seasons does the number of hours of sunlight in Virginia constantly increase

Winter and spring

How much sun would the north pole get on the 1 st day of each season if the Earth was not tilted ?

12 hours every day

What is the formula for percent error

x 100 EV-AV AV

What is the percent error if the estimated value is 6 and the actual value is 9 ?

33 %

What are the IV and DV for the following: Are younger siblings treated better by their parents than older siblings?

IV: age of siblings DV: treatment by parents

What is the formula of density ?

mass volume

What is the density of water ?

one

What is the volume of an object with a mass of 6 and a density of 3 ?

2

Is the sun rising and example of real or apparent motion ?

apparent

Does an object with a density of 1.4 float or sink in water ?

sink

Which creates a day, revolution or rotation ?

rotation

What causes the seasons ?

The tilt of Earth

Approximately, how many degrees does the Earth revolve per ? Earth’s orbit 1°