Match the following vocabulary with their descriptions. 1. plate tectonic model
A model that explains how the continents used to fit together like jigsaw pieces. This is the origin of many earthquakes and volcanoes and explains the global distribution of some living things.
2. biological evolutionary model
A model that explains how existing species arise from earlier species through the mechanism of natural selection
3. geoscientists
A seismic ‘body wave’ that shakes the ground back and forth perpendicular to the direction the wave is moving. Secondary waves are slower than the primary waves and arrive after the primary waves from the epicenter.
4. primary wave
Scientists who study the composition, structure, and other physical aspects of the Earth, as well as Earth’s geologic history and present by using specific instruments to examine the composition of Earth, rock, and water. They use the principles of physics, mathematics, and chemistry to study not only the Earth’s surface, but also its internal composition, ground and surface waters, oceans, atmosphere, and magnetic, electrical, and gravitational forces
5. secondary (or shear) wave
the fastest kind of seismic wave, and consequently, the first to arrive at a seismic station. Primary waves can move through solid rock and fluids.
6. seismograph
Recordings made by a seismograph
7. seismograms
A machine which tells us about the strength and speed of seismic waves.