Rocks and Fossils

How are Sedimentary Rocks formed?

• Cooling and Hardening
• Heat and Pressure
• Compacting and Cementing
• Melting

Where can the oldest layer be found?

• The top layer
• The middle layer
• They are all the same age
• The bottom layer

In what kind of rock can fossils be found?

• Sedimentary Rocks
• Igneous Rocks
• Metamorphic Rocks
• Granite

How are fossils created?

• Traces of organisms get turned into stone.
• Dead organisms are quickly buried for millions of years.
• Animals get trapped.
• All of the above

What are the 3 main fossil fuels?

• Coal, Oil, and Gasoline
• Coal, Oil, and Natural Gas
• Electricity, Gasoline, Petroleum
• Coal, Oil, Non-renewable Resources

What must be present for Fossil Fuels to form?

• Bones and Sediment
• Dead Organisms and Layers of Sediment
• Dead Organisms, Layers of Sediment, and Heat & Pressure over time
• Bones, Layers of Sediment, and Heat & Pressure over time

Fossil Fuels formed over long periods of time after particles in water settled to the sea floor and formed marine mud.  What kinds of particles needed to be present in the marine mud in order for fossil fuels to form.

• Mostly sand and a few small bits of wood
• Mostly decaying organisms
• Mostly lava and a few sedimentary rocks
• Mostly metal minerals

Some students made a model to show one of the first steps in the formation of sedimentary rock.  The students pour 2 cm of light-colored sand into a clear plastic box.  Then they add 1 cm of gravel.  Finally, they pour 2 cm of dark-colored sand on top of the gravel.  Which characteristic of sedimentary rock does this model best show?

• Sedimentary rock is made of layers.
• Sedimentary rock is cemented bits of rock.
• Sedimentary rock is often limestone.
• Sedimentary rock is common in Texas.

All of these are related to the formation of oil or natural gas EXCEPT

• Decomposed Animals
• Decayed Plants
• Sedimentary Rocks
• Active Volcanoes

Coal often forms where once there was swamps.  What characteristic of swamps is important to the formation of coal?

• High Temperature
• Abundant Plant Life
• Frequent Rains
• Reptile Predators