Earthquakes and Earths Interior 2023 Questions and
Answers 100% Verified
Describe "S" waves in detail including what the "s" means.
Secondary waves travel along Earths outer layer move at right angles to direction they
travel. Travel only through solids. Slower than P waves
Describe "P" waves in detail including what the "p" means.
Primary waves push-pull compressional waves move in direction waves travel. Travel
through solids, liquids and gases, fastest of all earthquake waves.
What is a tsunami?
Seismic sea wave triggered by underwater earthquake and shift in slab on ocean floor.
Describe how tsunami travels through water of different depths.
Travels faster in deeper water
Describe the composition of continental crust.
Granitic rock with density of 2.7 g/cm3. Less dense than oceanic crust.
How old is continental crust?
Up to 4 billion years
How old is oceanic crust?
180 million years of less
What is the core of the Earth made of?
Iron-Nickel alloy
What is the mantle made of? How do we know this?
Peridotite, lava flows
Where did the most deadly Earthquake in the US occur?
San Francisco
Where did the largest magnitude earthquake occur? What was the magnitude?
9.6 Southern Chile
On the Richter scale, what level of magnitude is felt by most people?
4-4.9
In the San Francisco quake in 1906, what caused the most destruction?
Fire
On the Richter scale, each increases the energy___times.
32
Define epicenter
Location directly above the Earths surface from focus
Define surface waves
Seismic waves that travel along Earths surface
Name and describe the layers of the Earth based on composition are:
Crust - continental & oceanic crusts 7-70km. Thick, thin rocky layer granitic or basaltic.
Mantle - below crust to 2900 km peridotite
Core- sphere with radius of 3486 km
Name and describe the layers of the Earth based on physical properties are:
Lithosphere- cool, solid and rigid
Asthenosphere- soft, weak layer easily deformed.
Answers 100% Verified
Describe "S" waves in detail including what the "s" means.
Secondary waves travel along Earths outer layer move at right angles to direction they
travel. Travel only through solids. Slower than P waves
Describe "P" waves in detail including what the "p" means.
Primary waves push-pull compressional waves move in direction waves travel. Travel
through solids, liquids and gases, fastest of all earthquake waves.
What is a tsunami?
Seismic sea wave triggered by underwater earthquake and shift in slab on ocean floor.
Describe how tsunami travels through water of different depths.
Travels faster in deeper water
Describe the composition of continental crust.
Granitic rock with density of 2.7 g/cm3. Less dense than oceanic crust.
How old is continental crust?
Up to 4 billion years
How old is oceanic crust?
180 million years of less
What is the core of the Earth made of?
Iron-Nickel alloy
What is the mantle made of? How do we know this?
Peridotite, lava flows
Where did the most deadly Earthquake in the US occur?
San Francisco
Where did the largest magnitude earthquake occur? What was the magnitude?
9.6 Southern Chile
On the Richter scale, what level of magnitude is felt by most people?
4-4.9
In the San Francisco quake in 1906, what caused the most destruction?
Fire
On the Richter scale, each increases the energy___times.
32
Define epicenter
Location directly above the Earths surface from focus
Define surface waves
Seismic waves that travel along Earths surface
Name and describe the layers of the Earth based on composition are:
Crust - continental & oceanic crusts 7-70km. Thick, thin rocky layer granitic or basaltic.
Mantle - below crust to 2900 km peridotite
Core- sphere with radius of 3486 km
Name and describe the layers of the Earth based on physical properties are:
Lithosphere- cool, solid and rigid
Asthenosphere- soft, weak layer easily deformed.
