Show:
The Sun
Earth's Motion I
Earth's Motion II
Earth's Axis
The Seasons
100

This process takes place in the core of the Sun.

What is nuclear fusion?

100

The path an object follows as it moves around another object is this. 

What is an orbit?
100
It's Earth making this motion which gives us day and night. 

What is rotation?

100

Earth's surface does this as you move away from the equator.

What is become more curved?

100

The equinox occurs in these two months.

What are September and March?

200
The core of the Sun is this many degrees Celsius hot. 

What is tens of millions (15,000,000) of degrees?

200

The motion of one object around another object is this. 

What is a revolution?
200

One of these takes Earth approximately 24 hours. 

What is rotation?

200

The higher latitudes are this compared to areas near the equator due to solar energy being more spread out.

What is cooler?

200

The northern hemisphere experiences this season when it is pointing away from the Sun.

What is winter?

300
About 1.1 million of this can fit inside the Sun. 

What are 1.1 million Earths?

300

It takes about 365 days for Earth to complete one of these around the Sun. 

What is a revolution?

300

Earth spins on this imaginary line. 

What is Earth's rotation axis?

300

Earth's axis is tilted this many degrees.

What is 23.5
300

The longest day in the southern hemisphere occurs on this day. 

What is the December solstice?

400

The Sun has 300,000 times more of this than Earth. 

What is mass?

400
The masses of two objects and the distance between them are the two central properties to this universal law. 

What is the universal law of gravity?

400

This is what gives us seasons. 

What is the tilt of Earth's axis. 

400
Earth's axis is pointed this direction at the June solstice.
What is most towards the Sun?
400

On these two days, the two hemispheres receive roughly the same amount of sunlight.

What are the spring and fall equinoxes?