7.9C Life and Earth Flashcard

Front

What is the habitable zone in our solar system?

Back

The habitable zone, also known as the Goldilocks zone, is the region around a star where conditions are just right for liquid water to exist on a planet's surface, making it possible for life as we know it. In our solar system, Earth and Mars are considered to be in the habitable zone.

Front

Which planets are in the habitable zone of our solar system?

Back

Earth and Mars are the two planets in our solar system's habitable zone.

Front

What are the basic requirements for life on Earth?

Back

The basic requirements for life on Earth include oxygen, water, and an energy source.

Front

Why is water essential for life?

Back

Water is essential for life because it is a solvent that facilitates chemical reactions, helps regulate temperature, and is necessary for the transport of nutrients and waste in living organisms.

Front

What role does oxygen play in life on Earth?

Back

Oxygen is crucial for the process of cellular respiration, which is how most living organisms convert food into energy.

Front

What is cellular respiration?

Back

Cellular respiration is the process by which cells convert glucose and oxygen into energy, carbon dioxide, and water.

Front

What is photosynthesis?

Back

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose, using carbon dioxide and water.

Front

What is the significance of the sun for life on Earth?

Back

The sun provides the energy necessary for photosynthesis, which is the foundation of the food chain, and it also helps regulate the Earth's climate.

Front

What is an ecosystem?

Back

An ecosystem is a community of living organisms interacting with each other and their physical environment.

Front

What are producers in an ecosystem?

Back

Producers are organisms, such as plants and algae, that can make their own food through photosynthesis.