Life on Earth

Front

Why is Earth considered a unique and habitable place in our solar system?

Back

It is the only planet with liquid water on its surface.

Front

What must a planet have for life as we know it to exist?

Back

Liquid water.

Front

What happens if the Earth were any closer to the Sun?

Back

The conditions would be too hot to support life.

Front

What is the role of Earth's atmosphere in regulating temperature?

Back

It traps heat from the Sun, preventing it from escaping into space.

Front

Which planet in our solar system has an atmosphere that is not suitable for life?

Back

Venus.

Front

What is the greenhouse effect?

Back

The process by which certain gases in Earth's atmosphere trap heat, keeping the planet warm.

Front

What is the significance of liquid water for life?

Back

Liquid water is essential for all known forms of life as it is a solvent for biochemical reactions.

Front

How does distance from the Sun affect a planet's temperature?

Back

The closer a planet is to the Sun, the hotter it tends to be.

Front

What gases are primarily found in Earth's atmosphere?

Back

Nitrogen (78%) and Oxygen (21%).

Front

What is the importance of the ozone layer?

Back

It protects living organisms from harmful ultraviolet (UV) radiation from the Sun.