Orbits
What is the movement of one object around another object?
Revolution
What does the seasonal change of the Earth depend on?
How far it is from the Equator
What affects a day's length?
The tilt of the Earth's axis
What occurs when the Northern or Southern hemispheres are at their greatest tilt towards the sun?
A solstice
When neither hemisphere is tilted towards the sun, what happens?
An equinox
What is known as the spinning of the Earth on it's axis?
Rotation
What is the difference in temperature dependent on?
The tilt of the Earth's axis
Which way is a hemisphere facing if there are more hours in a day than at night?
Towards the sun
In what months do solstices occur?
June and December
What does equinox mean?
"equal night"
What is the imaginary line from the North Pole to the South Pole through the Earth's center?
Earth's axis
The Earth's axis is tilted at what degree from the vertical?
23.5 degrees
Where are there more drastic changes in a day's length?
Closer to the poles
How many days per year do solstices occur in each hemisphere?
One
An equinox happens when day and night are both how long?
12 hours long
About how long does the Earth take to rotate once?
About 24 hours
In December, which way is the Northern Hemisphere facing?
Away from the Sun
Which place can have a more drastic change: Iceland or the United States?
Iceland
Solstices happen when the sun is where in the sky?
At its highest point in the sky
An equinox happens between what events?
Solstices
Which direction does the Earth rotate?
It rotates from west to east.
During March and September, which seasons are occurring in the hemispheres?
Autumn and spring
In Sweden during January, which position is the sun mainly at throughout the day?
Below the horizon
What pulls the Earth to make the solstice happen?
Gravity
In what months do equinoxes occur?
September and March