Law of Superposition
earth
rock cycle
earthquakes
random
100
According to the Law of Superposition, where would you find the youngest rock layer in an undisturbed horizontal sequence?
At the very top
100
Which part of the earths crust is the thinnest but most dense?
Oceanic Crust
100
This type of rock is formed from heat and pressure inside the earth
Metamorphic
100
True or False: In an earthquake, the S-waves are the "Primary" waves that arrive at a seismograph station first.
false
100
What are the 3 main parts of the Earth in order? starting from the inside to the outside.
Core, mantle, crust
200
Which is the oldest layer?
Letter C
200
Tectonic plate theory is....
Tectonic plates move around, moving continents and creating surface and sub-surface events on the planet.
200
Why are fossils almost exclusively found in sedimentary rock?
The heat in the processes that create metamorphic and igneous rock destroy fossils.
200
Since weathering and erosion are constantly happening, what difference would you expect to see between an old mountain and a new mountain?
Younger mountains have tall jagged peaks and older mountains are lower and more rounded.
200
Which of Earth's layers has a convection current?
A. Crust
B. Mantle
C. Core
B. Mantle
300
Which is the second youngest rock layer?
Letter H
300
What is the primary "engine" that drives the movement of Earth's tectonic plates?
A. Solar radiation from the sun
B. Convection currents in the mantle caused by heat from the core
C. The gravitational pull of the moon
D. Surface winds moving from high to low pressure
B. Convection currents in the mantle caused by heat from the core
300
Scientist can use radioactive elements to determine a very accurate age of rocks. This method of dating is called ______________ _______________.
Absolute dating.
300
When an earthquake occurs underwater and creates a pressure wave it is called a ______________
tsunami
300
Why are volcanos so common in mountain ranges such as the Andes?
The Andes are at a tectonic plate convergent boundary.
400
What type of Igneous rock cools inside the earth? What is a good technique to remember it?
Intrusive Igneous rock
Intrusive starts with IN and it cools INside the earth
400
What are the pieces of evidence that prove Wegener's theory of continental drift?
the jigsaw puzzle fit of the continents, matching fossil records, identical rock and mountain formations, glaciers
400
When _____________ cools it forms Igneous Rock
Magma (melted rock)
400
When two plates move apart from each other, what type of boundary is it?
Divergent
400
What makes the best index fossil?
Found everywhere and for a short period of time
500
Using the Law of Superposition, tell me the order the layers and intrusion were formed.
They were formed in the following order:
G, N, A, K, Intrusion, S, D
500
Tectonic plate movement is responsible for what geological things that happen on the surface of the earth? (Name at least 2)
Earthquakes, volcanoes, mountains, mid-ocean ridges.
500
When an oceanic plate sinks under a continental plate this is called _____________________.
Subduction
500
At which type of plate boundary do plates slide past each other, often causing earthquakes like those found at the San Andreas Fault?
Transform
500
What is the source of energy that drives Earths plate tectonics, earthquakes, and volcanic eruptions?
Heat from Earths molten layers.