HMH Solar System Flashcard 7.9C

Front

What is the most crucial characteristic of our solar system that supports life on Earth?

Back

The distance between the Earth and Sun.

Front

What are habitable zones?

Back

Areas around a star where water can be liquid.

Front

According to Dr. Edgar, what two things does a planet need to be habitable?

Back

Liquid water and an energy source.

Front

Which planet is best to observe for life based on the provided diagram?

Back

Planet D.

Front

How does the atmosphere contribute to the existence of life on Earth?

Back

It maintains a constant temperature, shields Earth from small collisions, and offers protection from radiation.

Front

What is the role of liquid water in supporting life?

Back

Liquid water is essential for all known forms of life.

Front

What is an energy source in the context of planetary habitability?

Back

An energy source can be sunlight, geothermal energy, or chemical energy that supports biological processes.

Front

Why is the distance between the Earth and Sun important for life?

Back

It allows for temperatures that can support liquid water.

Front

What is the significance of gas exchange between plants and animals?

Back

It is essential for respiration and photosynthesis, but it is not a primary function of the atmosphere.

Front

What does the term 'habitable zone' imply about a planet's location?

Back

It implies that the planet is at a distance from its star where conditions may allow for liquid water.