CC #11- The Earth

How did the understanding of planets, including Earth, evolve with the invention of the telescope and spacecraft?

• They were always known to be worlds.

• They changed from bright lights to worlds and then to places.

• They were initially thought to be fixed stars, then became known as planets.

• The telescope proved Earth was the center of the universe.

What are the two main layers of Earth's core and their primary composition?

• Inner core (solid iron/nickel) and Outer core (liquid iron/nickel).

• Inner core (liquid iron/nickel) and Outer core (solid iron/nickel).

• Inner core (solid rock) and Outer core (liquid rock).

• Inner core (liquid rock) and Outer core (solid rock).

What is the consistency of Earth's mantle?

• Liquid lava.

• Solid rock that cannot flow.

• Very thick hot plastic that flows over geological periods.

• A gaseous layer.

Which part of the Earth is primarily responsible for generating its magnetic field?

• The inner core

• The mantle

• The outer core

• The crust

What is the main function of Earth's magnetic field?

• To regulate ocean currents

• To protect the atmosphere from solar wind

• To cause volcanic eruptions

• To create the Earth's rotation

Which gas constitutes the largest percentage of Earth's atmosphere by volume?

• Oxygen

• Argon

• Carbon Dioxide

• Nitrogen

What is the primary role of carbon dioxide in Earth's atmosphere regarding temperature regulation?

• It cools the Earth by reflecting sunlight

• It traps infrared light, warming the Earth

• It creates clouds, leading to precipitation

• It absorbs ultraviolet light, protecting life