What Makes a Planet Habitable

Why is the Goldilocks Zone important for life on a planet?

• It’s too close to the sun.

• It has the right temperature for liquid water to exist.

• It is very cold

What does the ozone layer do to help life on Earth?

• It keeps the Earth cool.

• It protects us from dangerous sunlight.

• It makes Earth warmer.

Why is liquid water important for life on a planet?

• It helps plants grow.

• It is only needed for drinking.

• It makes the Earth colder.

How does the atmosphere help life on Earth?

• It keeps the Earth’s temperature just right.

• It makes the Earth very hot.

• It makes the Earth very cold.

Why is a stable orbit important for a planet’s habitability?

• It keeps the planet in the right place, so it doesn’t get too hot or cold.

• It makes the planet move faster.

• It makes the planet spin faster.

Why do planets need a magnetic field or magnetic shield?

• To protect from dangerous space radiation.

• To make the planet spin.

• To stop meteors from hitting the planet.

What makes a planet warm enough for life?

• It has sunlight and energy from its star.

• It has a lot of dust storms.

• It has many moons.

What is the Earth's outermost layer called?

• Crust

• Mantle

• Core

What is the Earth's crust made of?

• Rocks and minerals

• Water and gases

• Iron and nickel

How does the Earth's atmosphere protect life on Earth?

• It provides oxygen for breathing.

• It protects us from harmful solar radiation.

• Both a and b.