Earth’s Motion

Which month is when autumn begins in the southern hemisphere?

Regions near the North and South poles receive more Sun radiant energy than regions near the equator.

The energy in a beam of sunlight tends to become more spread out the farther you travel from the equator

A solstice is a day when Earth’s rotation axis is the most toward or away from the Sun.

The northern hemisphere is starting its winter in December Solstice.

The northern hemisphere is starting their winter in December Solstice.

The Law of Universal Gravitation depends on what?

The more mass either object has, or the closer together they are, the weaker the gravitational pull.

Nuclear fusion is when the two planets collide toward one another, releasing huge amounts of energy.

Earth moves around the Sun in a circular path.

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

The line on which an object rotates is the rotation axis

The tilt of Earth’s rotation axis is always in the same direction by the same amount.

In June solstice, the Northern hemisphere will be rotating away from the Sun.

Because Earth’s surface is curved, different parts of Earth’s surface receive different amounts of the Sun’s energy. 

Relative to the direction of a beam of sunlight, Earth’s surface tends to become more tilted as you move away from the equator.

There are four days each year when the direction of Earth’s rotation axis is special relative to the Sun. 

In September Equinox the Southern hemisphere will receive longer hours of daylight.

In December Solstice Southern hemisphere will be experiencing summer time.

In December Solstice Northern hemisphere will be experiencing summer time.