Mountains and Life: Exploring the Connection

What is the primary geological process responsible for mountain building on Earth today?

• Sedimentation

• Plate tectonics

• Volcanic eruptions

• Erosion

When did global plate tectonics begin on Earth?

• 2.5 billion years ago

• 1 billion years ago

• 3 billion years ago

• 4.5 billion years ago

What event is marked by a significant increase in oxygen concentrations due to cyanobacteria?

• Permian Extinction

• Cretaceous-Paleogene Extinction

• Cambrian Explosion

• Great Oxidation Event

What role does graphite play in mountain building according to the hypothesis discussed?

• It lubricates fault surfaces

• It strengthens the crust

• It prevents erosion

• It causes volcanic eruptions

What evidence supports the connection between organic carbon deposits and mountain ranges?

• Graphite with specific isotope signatures

• Presence of diamonds

• High levels of sulfur

• Abundant fossil records

Did early life on Earth directly cause the formation of mountains?

• No, mountains formed due to erosion

• Yes, through volcanic activity

• No, mountains formed independently

• Yes, by creating organic carbon deposits

What is an example of mountain formation without plate tectonics?

• Andes

• Rocky Mountains

• Himalayas

• Hawaiian Islands

Can mountains on other planets be considered definitive signs of life?

• No, only if they have tectonic plates

• Yes, if they contain water

• No, they do not require life

• Yes, they always indicate life

What is a major challenge in using organic carbon as an indicator of life on other planets?

• Organic carbon is only found on Earth

• Organic carbon is rare

• Organic carbon is unstable

• Organic carbon can form abiotically

What type of world would be most suitable for comparing mountain formation to Earth's?

• An icy moon

• A planet with a methane atmosphere

• A rocky planet with silicate minerals

• A gas giant