SCIENCE

• The solidified lava of a volcano belongs to which rock family? igneous 
• What describes the entire solid earth realm and is composed of mineral matter? lithosphere
• Which of the following energy sources does NOT originally come from the Sun?  geothermal  
• What percentage of the earth's atmosphere does O2 comprise?

  21%
• What gas makes up the majority of our atmosphere? nitrogen
• Which layer of the Earth has the highest density? core (inner)
• Which layer of the Earth contains most of its mass? mantle
• How many layers are there in the Earth's crust? 3
• The tanning rays of the sun are called? ultraviolet rays
• Global climate change is being attributed to the atmospheric increase in what two gases produced by human activities?

  methane and carbon dioxide
• The ozone layer is located in which region of the atmosphere? stratosphere
• The convergence of two CONTINENTAL plates will produce folded mountains
• Which statement best describes why S-Waves are NOT recorded by seismographs in certain areas?

  The s-waves are stopped by the liquid outer core.
• The BEST evidence that continents were once connected is that they have matching rock types, fossils, and coastlines
• Which is the MOST responsible for the formation of new crust at plate boundaries? rising magma at divergent boundaries
• What force was Wegener looking for to explain how the continents moved? convection currents in the mantle
• What happens when more dense, oceanic crust collides with less dense, continental crust? oceanic crust sinks below continental crust
• Where is the ozone layer located and why is it important to life on Earth?

  The ozone layer is in the stratosphere. It protects Earth from ultraviolet radiation from the sun. 
• What is needed in the atmosphere for clouds to form? condensation nuclei
• Why can mountains near the equator have snow caps?

  Mountains have high elevation. As you move up in elevation, temperature decreases. 
• Cool air. Does it rise or sink? It sinks. 
• Hot air. Does it rise or sink? It rises. 
• Which of the following gases is given off in the acid test of a carbonate mineral? carbon dioxide
• Which of the following pairs contains one igneous and one sedimentary rock? GRANITE AND LIMESTONE
• This sedimentary rock was used to build the Pantheon and the Colossium:  travertine
• Rocks are classified depending upon how they are formed. In which class would slate be found?  metamorphic 
• Which of the following is an igneous rock? granite
• Which of the following is a metamorphic rock? marble
• Which of the following materials is the hardest? silicon carbide