Earth in Space Refresher Flashcard

Front

What is the habitable zone?

Back

The habitable zone is the region around a star where conditions may be right for liquid water to exist on a planet's surface, which is essential for life as we know it.

Front

Why is there no life on the Moon despite being in the habitable zone?

Back

There is no life on the Moon because it lacks liquid water, has a very thin atmosphere, and is exposed to too much solar radiation.

Front

What is the difference between rotation and revolution?

Back

Rotation is the spinning of a planet on its axis, while revolution is the movement of a planet around the sun.

Front

What phase of the Moon is seen when it is waxing?

Back

A waxing moon is when the visible portion of the Moon is increasing, leading up to a full moon.

Front

What is a probe in space exploration?

Back

A probe is an unmanned spacecraft designed to send information back to Earth about space, planets, or other celestial bodies.

Front

What does it mean when the Moon is described as 'waning'?

Back

Waning refers to the phase of the Moon when the visible portion is decreasing after a full moon.