Alfred Wegener
Theory proposed in 1912
What is Contental Drift?
Surface Wave
What is S Wave?
Two main types of seismic waves and their movements.
What are P Waves and S Waves?
Earthquakes and Volcanoes are usually located in relation to these
What is a plate boundary?
The iner core is made of _________________
What is solid iron?
Continental Drift Theory in 1915
What is rejected?
Another name for primary waves are _______.
What are P waves
Types of stress in the crust.
What are Compression, Tension, and Shearing?
The two types of convergent boundaries
What is subduction (where volcanoes often occur) and collision (where mountains are usually formed)?
The lithosphere is broken into sections called _________
What is plates?
Buried in 300 feet of ice
What is his diary?
Primary waves compress and ______ the ground.
What is expand?
Types of methods used to detect earthquakes.
What are the mercalli, richter, and the moment magnitude scale?
The mid-ocean ridge is an example of a _________________ boundary and ___________________ occurs here where new ocean floor is formed
What is divergent boundary, sea-floor spreading?
Earth’s solid inner core is surrounded by the hot, molten metal of which layer?
What is outer core?
Deep mesure
What is Bathymetry?
Waves are an earthquake that produces vibrations. T or F
What is True?
Something you can do to make your home safer in an earthquake.
what is Fasten bookshelves, cabinets, and tall dressers to wall studs?
This is the mechanism (what causes) the plates to move
What is convection cycles in the mantle?
Which layers is warmer? the lithosphere or the asthenosphere?
What is the asthenosphere?
Didn’t pursue it
What is the Mid Atlantic Ridge theory?
The energy of seismic waves that reach the surface is the greatest at the focus. T or F
What is False
Geologists locate the epicenter of an earthquake.
what is plot out three seismograph locations that felt the quake on a map and draw a circle around each of these locations. Exactly where all the circles intersect is the epicenter?
Name four of the major plates
What is any of the following North American plate, South American plate, Eurasian Plate, Indoaustralia plate, African plate, Antarctica plate
The lithosphere is broken into sections called plates, which float on top of the _____________
What is the asthenosphere?