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Science Final 2 SRB
This is for our second semester finals SRB
| Question | Answer |
|---|---|
| What would you expect after an explosive eruption? | Darkened skies |
| What kind of volcano has steep slopes? | Cinder cone |
| What volcano will never erupt again? | Extinct |
| What volcano is currently erupting? | Active |
| What volcano has not erupted recently but could erupt in the future? | Dormant |
| What creates volcanoes? | Repeated eruptions of lava |
| Where are volcanoes most likely to form? | Along plate boundaries |
| What would you most likely expect to see during a nonexplosive eruption? | Huge lava flows |
| Molten rock deep underground often gathers in what? | Magma chambers |
| What is likely if the water/silica content in magma is high? | An explosive eruption |
| Which type of lava flows like dripping wax? | Pahoehoe |
| Cool, stiff lava that forms jumbled heaps of sharp chunks near the vent is called? | Blocky lava |
| Which type of pyroclastic material gets its name from a word that means "little stones" | Lapilli |
| The pyroclastic material that can reach the upper atmosphere and circle the Earth for years is? | Volcanic ash |
| Rock begins to melt when... | Temperature increases and pressure decreases |
| A tiltimeter measures? | Changes in a volcanoes slope |
| Lava that has a fluid, runny consistency probably... | Has a low silica content |
| What kind of boundary is at the Mid-Ocean Ridge? | Divergent |
| What is a crack in the earth's crust? | Rift |
| Mount Rainer and Mount St. Helens are? | Composite volcanoes |
| Magma forms in the Earth's crust and mantle where? | Temperature and pressure are high |
| Molten rock under the earth's surface is? | Magma |
| Magma that flows onto the earth's surface is? | Lava |
| Dust-sized particles of hardened lava is? | Ash |
| Magma that is blasted into the air and hardens? | Pyroclastic material |
| What is a funnel-shaped pit near a volcano's central vent? | Crater |
| A large, semicircular depression over a magma chamber is? | Caldera |
| A wide, flat platform made of lava? | Lava plateau |
| A small volcano that erupts for a short period of time: | Cinder cone |
| A volcano formed by a combination of explosive and nonexplosive eruptions: | Composite volcano |
| An opening in the earth's crust? | Vent |
| Most earthquakes happen at the edges of what? | Tectonic plates |
| What are the three types of plate motion? | Transform, divergent and convergent |
| What is the simples method of finding an earthquake's epicenter? | S-P Time Method |
| Another word for an earthquake's strenght is its? | Magnitude |
| How much more ground motion does an earthquake with a magnitude of 6 have than one with a 4 magnitude? | 100 Times |
| When should you return to your house after an earthquake? | When someone in authority says to |
| The waves of energy that travel through the earth are called? | Seismic waves |
| The epicenter is usually above what? | Focus |
| What determines the strenght of an earthquake? | Ground motion |
| What scale measures the strength of an earthquake? | Richter |
| The intensity of an earthquake is partially determined by the? | Amount of damage it causes |
| A measure of how likely an area is to have an earthquake is the? | Earthquake-hazard level |
| One way to forecast earthquakes in a place is to observe the past | strength and frequency |
| P waves travel through what states of matter? | All of them |
| What is the scientific study of earthquakes? | Seismology |
| What do seimsmologists use to to measure earthquake strength? | Seismograms |
| What is the theory that active faults with few earthquakes in the past will have strong ones in the future? | Gap hypothesis |
| What occurs along faults when stress increases that can cause an earthquake? | Deformation |
| Rock that deforms like a stretched rubber band is an example of what kind of deformation? | Elastic |
| A thing that acts like a shock absorber in an earthquake-resistant building is a? | Base isolator |
| The fastest seismic waves are? | P waves |
| Waves of energy that travel through the earth are? | Body waves |
| The waves that cannot travel through liquids are? | S waves |
| The most destructive seismic waves are? | Surface waves |
| What is the process of making older structures more earthquake resistant? | Retrofitting |
| Something that keeps water and gas lines from breaking in an earthquake? | Flexible pipe |
| A weight located at the bottom of a building to help offset building movement? | Active tendon system |
| A weight placed in the roof of a building to conteract building movement is? | Mass damper |
| A recorder of seimsic waves is? | Seismograph |
| The beginning point of an earthquake is? | Focus |
Created by:
NickPW
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