Earth in Space
Spaced Out
100

This is caused by Earth traveling around the sun.  One side faces the sun and the other side does not. 

What is the causes of day and night on Earth?

200

The phenomena occurs Moon is between the Sun and Earth, leading to Moon's shadow on Earth.

What is a solar eclipse?

300

The moon is always half lit by the Sun and other half is not, just like Earth.  As the moon rotates around Earth, we see the moon at different angles which causes us to see more or less of the moon lit by the Sun, there causing this phenomena.

What does our Moon have different phases?

300

This is a giant collection of stars, planets, and other celestial events bound together by gravity.  Earth is a part of this.  

What is the Milky Way Galaxy?

400
This phenomena is caused by the planet's tilt as it orbits the sun.  This tilt leads to various amounts of sunlight reaching different parts of Earth at different times.

What causes Earth to have four seasons?

500

The phenomena occurs Earth is between the Sun and Moon, leading to Earth's shadow on the Moon.

What is a lunar eclipse?