g3909

What is the name of the outermost layer of the Earth?

• Mantle
• Core
• Lithosphere
• Crust

What is the approximate age of Earth?

• Approximately 2 billion years
• Approximately 10 million years
• Approximately 1 trillion years
• Approximately 4.5 billion years

) What is the deepest known point in Earth’s oceans?

• Challenger Deep
• Puerto Rico Trench
• Mariana Trench
• Java Trench

What gas makes up most of Earth’s atmosphere?

• Oxygen
• Carbon Dioxide
• Nitrogen
• Argon

Which continent has the most countries?

• Europe
• Asia
• South America
• Africa

Which ocean is the largest by surface area?

• Atlantic Ocean

• Indian Ocean

• Arctic Ocean

• Pacific Ocean

What is the primary component of the Earth's core?

• Iron

• Nickel

• Silicon

• Oxygen

Which layer of the Earth is responsible for tectonic activity?

• Inner Core

• Outer Core

• Mantle

• Crust

Which is the smallest continent by land area?

• South America

• Australia

• Antarctica

• Europe

What is the primary gas responsible for the greenhouse effect?

• Carbon Dioxide

• Methane

• Oxygen

• Nitrogen