Earth Science Online Power Session

The point from which an earthquake originates is called the -

• focus
• epicenter
• fault line
• shockwave

Cyanite (Al₂SiO₅), quartz (SiO₂), and leucite (KAlSi₂O₆) may be grouped together because they all contain -

• aluminum
• carbon
• potassium
• silicon

The folding and faulting found in the rocks of the Blue Ridge Mountains of Virginia were created by -

• collisions of continental plates
• wave action of prehistoric oceans
• the Coriolis effect
• heating and cooling of the prehistoric atmosphere

What does the ozone layer do?

• absorb ultraviolet radiation
• cause pollution
• increase biological activity
• nothing

In which of these general areas would you expect volcanoes to occur? 

• Areas with limestone formations and water flowing underground 
• Near areas of tectonic plate subduction such as the Pacific’s Ring of Fire 
• Near continental-continental boundaries where mountain-building occurs
•  At all kinds of tectonic plate boundaries

The diagram above shows the changes to a land surface caused by a river flowing through the area for many years. Which process caused the changes to the surface?

• Condensation
• Erosion
• Evaporation
• Pollution

Layer A probably formed in an ocean. Which of these is the best clue that layer A formed in an ocean?

• The thickness of the layer
• The type of fossils in the layer
• The position of the layer
• The density of the layer

Granite is a hard material and forms from cooling magma. Granite is a type of —

• lava stone
• igneous rock
• volcanic dust
• sedimentary rock

When comparing fossil A to fossil B, which is most likely correct?

• Fossil B is older
• Fossil B is larger
• Only fossil B is metamorphic
• Only fossil B was once an organism

Which of these animals is most likely to form a fossil?

• F
• G
• H
• J