Show:
Waves
Earthquakes
Vocab
Volcanoes
Miscellaneous
100
Which waves travel the deepest into the center of Earth? a. P-waves b. S-waves c. surface waves d. They all travel to the center of the inner core.
What is a. P-waves
100
Which movement of two blocks of rock along a fault causes an earthquake to occur? a. sliding horizontally past each other b. moving toward each other c. pulling away from each other d. any of the above
What is d. any of the above
100
Which describes the makeup of volcanic ash? a. particles of pulverized rock and vegetation b. particles of pulverized rock and glass c. pulverized bits of glass d. pulverized particles of rock
What is b. particles of pulverized rock and glass
100
In what way do volcanic eruptions affect the climate? a. They cause a global temperature increase. b. They cause a global temperature decrease. c. They cause a global precipitation increase. d. They cause a global precipitation decrease.
What is b. They cause a global temperature decrease.
100
The ____ waves are the first to reach a seismograph after an earthquake. a. surface b. secondary c. primary d. tsunami
What is c. primary
200
“We all got scared and ran outside. The house was ok, but our old shed fell over.” This quote would help a researcher to place an earthquake on which scale? a. Modified Mercalli Scale b. Richter Scale c. moment magnitude scale d. all of the above
What is a. Modified Mercalli Scale
200
The magnitude of an earthquake is measured by the ____. a. Richter scale b. moho discontinuity c. modified Meralli scale d. elastic limit
What is a. Richter scale
200
A break in Earth’s lithosphere where one block of rock moves toward, away from, or past another is called a(n) ____. a. fault b. earthquake c. strain d. stress
What is a. fault
200
What are the positive results of volcanic eruptions? a. The climate becomes warmer. b. Extra sulfuric acid is removed from the atmosphere. c. Rock and soil are enriched with valuable nutrients. d. Growing seasons become longer.
What is c. Rock and soil are enriched with valuable nutrients.
200
At least ____ seismographs are needed to accurately locate an earthquake epicenter. a. two b. five c. four d. three
What is d. three
300
A person located twice as far from an epicenter of an earthquake as another person will notice that the time between the arrival of the primary and secondary waves will be ____. a. the same b. larger c. reduced d. unnoticeable
What is b. larger
300
Primary waves ____ when they hit the liquid outer core. a. slow down b. stay the same c. stop d. speed up
What is a. slow down
300
The point in Earth's interior where the energy release of an earthquake occurs is the ____. a. focus b. epicenter c. fault d. inner core
What is a. focus
300
Lava flows like the one from Mount Etna in 2008, a. travel quickly and cause many deaths. b. can last over 6 months. c. rarely cause any damage. d. never cause towns to evacuate.
What is b. can last over 6 months.
300
Kilauea in Hawaii is the world's most ____ volcano. a. dormant b. active c. explosive d. all of the above
What is b. active
400
Scientists discovered changes in Earth's interior by studying ____. a. tsunamis b. tides c. changes in seismic waves d. all of the above
What is c. changes in seismic waves
400
When the force on rocks is great enough, they break, producing vibrations called ____. a. faults b. earthquakes c. strains d. stresses
What is b. earthquakes
400
instruments that record seismic activity
What is seismometer
400
Where can volcanoes form? a. convergent plate boundaries b. divergent plate boundaries c. over hotspots in the middle of plates d. all of the above
What is d. all of the above
400
If, after an eruption, the top of a volcano collapses down, a ____ forms. a. caldera b. vent c. crater d. volcanic neck
What is a. caldera
500
The most destructive seismic wave are ____. a. primary waves b. secondary waves c. P-waves d. surface waves
What is d. surface waves
500
Secondary waves ____ when they hit the liquid outer core. a. slow down b. stay the same c. stop d. speed up
What is c. stop
500
graphical illustration of earthquake waves
What is seismogram
500
A ____ often forms a mountain when layers of lava and volcanic ash erupt and build up. a. caldera b. volcano c. dike d. batholith
What is b. volcano
500
Basaltic magma produces nonexplosive eruptions such as those at ____. a. Mount St. Helens b. Mount Pinatubo c. Kilauea d. Mount Unzen
What is c. Kilauea