Earth's Layers and Natural Disasters

Earth's Layers and Natural Disasters

Understanding our planet's structure How Earth's layers create natural disasters Year 10 Geography - New Zealand Curriculum

Planet Earth: More Than Meets the Eye

Earth is made up of many different layers Each layer has unique properties and temperatures These layers work together like a complex system Understanding layers helps explain natural disasters

The Crust: Our Foundation

The layer we stand on every day Made of rocks and soil Like the crust on a piece of toast Relatively thin compared to other layers Where we experience earthquakes and volcanoes

The Mantle: Earth's Hot Engine

Thickest part of the Earth Begins 25 miles (40 km) below surface Reaches 1,800 miles (2,897 km) deep Temperatures: 1,600°F to 4,000°F (871°C to 2,204°C) Solid but moves slowly due to extreme heat

The Core: Earth's Heart

Inner and outer core with different properties Formed when Earth was created Heaviest materials sank to the center Outer core is liquid, inner core is solid Creates Earth's magnetic field

Tectonic Plates: The Moving Puzzle

Stable vs Active Areas

{"left":"STABLE AREAS: Few or no earthquakes\nLocated in the middle of plates\nAustralia is mostly stable\nLower risk of natural disasters","right":"ACTIVE AREAS: Frequent earthquakes and volcanoes\nLocated along plate edges\nNew Zealand sits on plate boundary\nHigher risk of natural disasters"}

Earthquake Hotspots Investigation

Examine the world earthquake map Identify which areas have the most earthquakes Compare Australia and New Zealand's earthquake risk Name earthquake-prone countries in each continent Choose a safe country to live in and justify your choice

Why is New Zealand Earthquake Prone?

Think about what you've learned about tectonic plates Consider New Zealand's location on the map What makes some areas more dangerous than others? How does this affect where people choose to live?

Summary: Earth's Layers and Natural Disasters

Earth's layers work together as a dynamic system Plate movement causes earthquakes and volcanoes New Zealand's location makes it earthquake-prone Understanding geology helps us prepare for disasters Knowledge of Earth's structure saves lives