The star at the center of our solar system is?
the sun
What causes day and night?
Earth's rotation
Which earth represents summer in the Northern Hemisphere?
left
When the Northern Hemisphere has spring, what is the season in the Southern Hemisphere?
fall
Name the 4 seasons we have on Earth
Summer, Fall, Winter, and Spring
The earth __________, or spins on its axis every 24 hours.
rotates
Why do we have seasons?
Because of Earth's tilt
Which earth represents winter in the Northern Hemisphere?
right
What is the degree of tilt of the Earth's axis?
23.5 degrees
What season is it in the Northern Hemisphere when the Southern Hemisphere tilts toward the sun?
winter
An imaginary line that passes through the North and South Poles.
Earth's axis
How many days does it take Earth to orbit the sun
365 days

Which earth represents spring?
top / back
Where on the Earth is it the warmest all year round?
the tropics
What day of the year has the least amount of daylight hours in the northern hemisphere?
Dec 21st
The path the Earth takes as it revolves around the sun is called its ____________.
orbit
What do we call it when the Earth makes one full revolution around the sun?
one year

What earth represents the fall?
bottom / front
In the summer, are there more hours of daylight or darkness in the northern hemisphere?
What is daylight
When the number of hours of daylight and darkness are about equal, we call these days the ___________?
equinoxes
Name the imaginary line that goes all the way around Earth halfway between the North and South poles
equator
When Earth spins one time around on it's axis, what does that represent?
What is one day
What does the shading represent in the images for this column?
nighttime
In what direction does the sun appear to rise?
East
What are the dates of the spring and fall equinoxes?
Mar 21st and Sept 21st