18-Week Assessment Word Scramble
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| *Chapter 6* | *Rocks* |
| What kind of rock forms when magma or lava cools? (Examples: granite, basalt, obsidian, and pumice.) | Igneous Rock |
| An igneous rock with large crystals most likely would have cooled... | ...slowly, below ground. (Example: granite) |
| A conglomerate is a what type of sedimentary rock? | Clastic Rock (Which means is formed from smaller (rounded) rock pieces cemented together. An example is puddingstone.) |
| What kind of rocks form when other types of rocks are subjected to intense heat and pressure. (Examples: marble and slate) | Metamorphic Rock |
| ____________________ is a change in the texture, structure, or chemical composition of a rock due to temp. and pressure over a large area. | Regional Metamorphism |
| Name some sedimentary rock s that are well sorted: | sandstone, shale |
| This sedimentary rock often contains fossils, and forms from the remains of marine organisms. | What is limestone? |
| Metamorphic rock that is... has been exposed to tremendous pressure at tectonic plate boundaries, which causes its minerals to form layers or bands. | ...foilated... |
| *Chapter 10* | *Plate Tectonics* |
| The __________ is made up of the crust and rigid upper mantle. (It's what the tectonic plates are made out of.) | lithosphere |
| Name three pieces of evidence used to support Wegener's hypothesis of continental drift. | -fossils from the Mesosaurus, tropic plants (Africa, S. America Antarctica) - rock formations that matched up -changes in climatic patterns |
| You would find a subduction zone at which type of plate boundary? | You would find a subduction at a -convergent- boundary. |
| This is the ocean the Ring of Fire- a chain of active volcanoes and earthquakes- is located around. | What is the Pacific Ocean? |
| The country of _______ sits atop a divergent or transform plate boundary? | -Iceland-; divergent boundary |
| True or False: Sediment is thicker closer to the center of a mid-ocean ridge. | False |
| * Chapter 12* | *Earthquakes* |
| What is the sudden return of a deformed rock back to its undeformed shape? | Elastic rebound it is. |
| Is the epicenter or the focus the location on a fault where the first motion of an earthquake begins? | the focus |
| Earthquakes with ____________ usually cause the most damage. | shallow focus |
| This is caused by an earthquake whose epicenter is on the ocean floor. | A tsunami. |
| The measure of 1.________ of an earthquake is called 2._________, and is measured on the 3._____________. | 1. strength 2. magnitude 3. Richter scale |
| Define seismograph | A seismograph is an instrument used to record seismic waves. |
| The measure of how much damage an earthquake causes is called _________. (1) What is it measured on? (2) | 1. intensity 2. It is measured on the Modified-Mercalli Scale. |
| *Chapter 13* | *Volcanoes* |
| What is the type of lava that flows easily and cools with ropy appearance? | pahoehoe |
| The bits and pieces of rock and ash that are ejected from a volcano during an explosive eruption. | What is pyroclastic material? |
| Define Viscosity | The resistance to flow of a fluid; the thickness or stickiness of a magma/lava. |
| Hawaiian Islands | Type of volcano: shield Type of magma/lava: mafic Origin of magma: oceanic Viscosity: low Type of eruption: quiet |
| Mt. St. Helens | Type of volcano: composite Type of magma/lava: felsic Origin of magma: continental Viscosity: high Type of eruption: explosive |
| The Hawaiian Islands formed from a hot spot on the ocean floor, unlike Japan, which is considered an __________. | island arc |
| What type of lava is thicker than pahoehoe and cools with a rough texture? | aa |
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ryleemcgahan
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