Show:
eccentricity
Orbits
Polaris
Seasons
Earth's rotation
100
Orbits are oval shapes called this...
What is an ellipse?
100
The earth eccentricity is close to this
What is a circle
100
Polaris is also called the ___________
What is North Star?
100
Equal day and equal night occur on the _______
What is equinoxes
100
The earth's rotation affects winds and currents because of this effect
What is Coriolis effect?
200
To measure the shape of an ellipse you measure this...
What is eccentricity?
200
The earth orbits the sun in this model
What is heliocentric?
200
The altitude of polaris is the same as the observers _________
What is latitude?
200
The longest day of the year is on _________
What is June 21st?
200
The earth rotates this many degrees in an hour
What is 15 degrees?
300
An ellipse has 2 of these...
What is foci?
300
Seasons are caused by this motion of earth
What is revolution
300
The stars create ____________ around polaris
What is star trails?
300
The shortest day of the year is on ___________
What is Dec. 21st?
300
This pendulum can prove earth's rotation
What is Foucault?
400
To measure all the way across an ellipse you measure the .....
What is major axis?
400
We see different constellations at different times of the year due to this earth's motion
What is revolution
400
Polaris is in the _______________ sky.
What is northern?
400
From season to season the sun at noon changes in this way
What is the altitude?
400
The earth"s rotation is on an axis of this many degrees
What is 23.5?
500
Eccentricity can range from this number to this number...
What is 0 to 1
500
The earth's ______________ remain parallel to itself as it revolves around the sun
What is axis
500
Polaris is directly above this
What is north pole?
500
The path length changes from season to season due to this
What is position of sunrise and sunset?
500
objects are deflected in the northern hemisphere in this direction
What is right