Origin of the Earth, and Facts about the Planet

What is the age of Earth?

• 4.5 billion years

• 10 million years

• 100 million years

• 1 billion years

What caused Earth to become a molten planet?

• Volcanic eruptions

• Radioactive decay

• Bombardment by asteroids

• Solar wind

What is the purpose of Earth's magnetic field?

• To generate heat

• To protect from solar wind

• To create a molten core

• To attract meteors

What happened to Mars when its iron core cooled?

• It lost its atmosphere

• It formed a magnetic field

• It became habitable

• It grew in size

What is the role of the solar wind?

• To generate heat on Earth

• To create the magnetic field

• To strip away the atmosphere

• To form asteroids

What is the purpose of the liquid iron core in Earth?

• To generate electricity

• To create a magnetic field

• To produce volcanic eruptions

• To cool the planet

Why is Earth's magnetic north pole constantly moving?

• Due to the rotation of the Earth

• Due to the melting of the ice caps

• Due to the movement of the liquid iron core

• Due to the influence of other planets

What is the primary gas in Earth's atmosphere?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Hydrogen

What is the outermost layer of the Earth called?

• Mantle

• Crust

• Core

• Lithosphere

What is the primary component of Earth's core?

• Iron

• Gold

• Silver

• Copper