Show:
Earthquakes
Archaeology
Geology
Geography
Oceanography
100
There are about this many plates along the surface of the earth that move continuously and slowly past each other.
What are 20
100
This is what archaeologists do before they excavate.
What is survey
100
These rocks form as liquid magma cools, forming crystal structured rocks.
What are igneous rocks
100
This is the eighth largest country in the world and the second largest country in South America
What is Argentina
100
Oceans cover this percentage of the earth's surface
What is 71%
200
This is an area of stress in the earth where broken rocks slide past each other, causing a crack in the Earth's surface.
What is a fault
200
This is the name for broken pots
What is potsherds
200
These rocks form deep within the Earth when heat and pressure are applied to either igneous rocks or sedimentary rocks.
What are metamorphic rocks
200
These lines are imbedded in the ground in Peru and some people believe they were created by aliens.
What are the Nazca Lines
200
This trench is near Indonesia and is the deepest place on earth
What is the Mariana Trench
300
This is an instrument used for recording the intensity and duration of an earthquake.
What is a seismograph
300
This is found near active or extinct volcanoes and is hardened lava
What is obsidian
300
Of the three rock types, the most common near the surface of the crust is this type of rock.
What are sedimentary rocks.
300
Mount Olympus is located in this country.
What is Greece
300
90% of this activity occurs in the ocean
What is volcanic activity
400
The point on the earth's surface directly above the source of the earthquake.
What is the epicenter
400
Ramses II is a famous one of these
What is mummy
400
Scientists now believe that about 250 million years ago, a supercontinent known as this existed.
What is Pangaea
400
This is the largest country in the world
What is Russia
400
Almost what percentage of the sea is unexplored
What is 90%
500
A measurement of an earthquake's intensity
What is the Richter Scale
500
Dendrochronology measures time by counting this
What are rings of a tree
500
There are this many known elements that exist in the Earth’s crust.
What are 90.
500
The history of China is divided into this type of time period
What are dynasties
500
This is another name for a hypothermal vent
What is underwater volcano