The Sun
What is the temperature of the Sun's surface?
True or false? Earth's orbit is nearly circular.
True
True or False? It takes 12 hours for earth to make one complete rotation.
False. It takes 24 hours.
When the southern hemisphere is experiencing summer, the northern hemisphere is experiencing _______________.
winter
nuclear fusion.
The motion of Earth around the Sun is called __________________.
revolution
counterclockwise
On the December __________________, the north end of Earth’s rotation axis continues to point away from the Sun, but it does so less and less.
solstice
How many more times greater is the Sun's mass than Earth's?
300,000 times greater
What is the path an object follows as it moves around another object?
Orbit
How long does it take for Earth to make one full rotation?
24 hours
A day when Earth’s rotation axis is leaning along Earth’s orbit, neither toward nor away from the Sun, is called an _______________.
equinox
How many times greater is the Sun's diameter than Earth's?
more than 100 times
Why does the Earth orbit the sun? What do we call the force that keeps Earth from flying off in a straight line?
Gravity
The sun rises in the _________ and sets in the ___________ because Earth is rotating.
east, west
Seasons take place because the tilt of Earth’s _____________ relative to the Sun changes during the year.
axis
How far is the Sun from the Earth in km?
150 million km
What is the exact number of days it takes the Earth to revolve around the Sun (include decimal)?
365.24 days
True or false. Earth's rotation axis always points in the same direction.
During what solstice is the longest day of the year? December or June?
June