What are two ways that Earth moves in space?
Rotation and revolution
What is the imaginary line that passes through Earth's center and the North and South poles?
Axis
Earth spins on its axis. This is called _____________.
Rotation
What movement causes day and night?
Rotation of Earth
What is the movement of one object around another called?
Revolution
What is one revolution around the sun called?
A year
What is an orbit?
The path that Earth (or another object) follows around the sun
What shape is Earth's orbit?
An ellipse (A slightly elongated circle/oval)
During what month is Earth closest to the sun?
January
What is a calendar?
A system of organizing time that defines the beginning, length, and divisions of a year.
What type of calendar do we use now?
Gregorian
Where does the sun hit the Earth from almost overhead?
Near the equator
Near the poles, sunlight arrives at a steep angle, so it is spread out over a (GREATER/LESSER) area.
Greater
Why does Earth have seasons?
Its axis is tilted as it revolves around the sun.
Earth's axis is always tilted at an angle of ___________ from the vertical.
23.5*
When the northern hemisphere is tilted toward the sun, what season do we experience?
Summer
