Tectonic Plates and Earthquakes

Shona from Geoscience Australia explains Earth's structure, focusing on the crust and tectonic plates. She uses a globe and a flat map to illustrate how the Earth's crust is like a cracked eggshell, forming tectonic plates. The video highlights Australia's tectonic plate, its movement towards the north, and its speed, making it the fastest moving continent. The Pacific Plate, the largest and fastest plate, is also discussed, along with its role in causing earthquakes, especially around New Zealand and Indonesia. The video concludes with a note on Australia's own earthquake activity.

What is the outermost layer of the Earth called?

• Mantle

• Core

• Crust

• Lithosphere

How is the Earth's crust similar to a hard-boiled egg?

• The crust is like the egg white

• The crust is as thick as the egg white

• The crust is like the egg yolk

• The crust is like the thin shell

What are tectonic plates?

• Large pieces of the Earth's core

• Large pieces of the Earth's crust

• Large pieces of the Earth's atmosphere

• Large pieces of the Earth's mantle

Which direction is the Australian plate primarily moving?

• West

• South

• North

• East

How fast does the Australian plate move each year?

• 10-11 centimeters

• 15-16 centimeters

• 6-7 centimeters

• 1-2 centimeters

Which is the fastest moving tectonic plate?

• African Plate

• Australian Plate

• Eurasian Plate

• Pacific Plate

What is the movement speed of the Pacific plate?

• 5-6 centimeters per year

• 10-11 centimeters per year

• 7-8 centimeters per year

• 12-13 centimeters per year

Where do most earthquakes occur?

• In the Earth's mantle

• At the edges of tectonic plates

• In the middle of tectonic plates

• In the Earth's core

Do earthquakes occur in Australia?

• No, Australia is earthquake-free

• No, they only occur at the edges of plates

• Yes, but they are not as frequent or large

• Yes, and they are very frequent and large

What causes earthquakes at plate boundaries?

• Tsunamis

• Rocks scraping past each other

• Volcanic eruptions

• Wind erosion