Earth’s Structure
Plate Tectonics
Earthquakes
Tsunamis
Volcanoes
100
What does Earth mean?
The World
100
How many tectonic plates does earth have?
15-20
100
What are earthquakes?
The sudden movement or trembling of the Earth's tectonic plates.
100
What does Tsunami mean?
Harbour Wave
100
What is a volcano?
Volcanoes are openings, or vents where lava, tephra (small rocks), and steam erupt on to the Earth's surface.
200
What is the thinnest layer of Earth?
Crust
200
What is the largest tectonic plate?
Pacific
200
What are the 2 main seismic waves?
Body and Surface waves
200
Where do most tsunamis occur?
Ring of Fire
200
What type of volcanoes are the biggest?
Shield Volcanoes
300
What is the hottest layer of earth?
Inner core
300
What is the smallest plate?
Juan de Fuca Plate. it has been subducted by the north american plate.
300
What is a seismic wave?
A wave in the earth produced by an earthquake or other means.
300
What was the most dangerous tsunami?
Boxing day Tsunami
300
What type of volcanoes are the smallest?
Cinder Cones
400
Earth is commonly referred to these 2 things, what are they?
Onion and a Magnet
400
What is slab pull?
Slab pull is that part of the motion of a tectonic plate caused by its subduction.
400
Where was the most dangerous earthquake and what was the magnitude?
Chile/ 9.5
400
What is the year of the Lituya Bay Tsunami?
1958
400
What type of volcanic eruption is the least destructive?
Strombolian eruptions
500
What layer has partially molten rock or slush like material consisting of solid particles with liquid occupying spaces in between?
Asthenosphere
500
What is the slab pull formula?
500
How many buildings were totally collapsed in the Tōhoku Earthquake?
127,290
500
How long and high were Mars's tsunamis?
25-43 miles long and 1,000 feet high
500
What was the most dangerous volcanic eruption, How many people died and what caused most deaths?
Tambora, Indonesia/ 92,000/ Starvation