EOG Review Warm Up (Week 3)

Which is the main source of dissolved oxygen in the ocean?

• underwater earthquakes

• decay of living organisms

• animals that live near the surface

• plants and algae that live near the surface

A scientist finds the bones of a dinosaur. What could help the scientist determine the approximate age of the dinosaur bones?

• the index fossils in the area of the bones

• the birds living in the area of the bones

• the weather conditions in the area of the bones

• the kinds of trees living in the area of the bones

Which best describes the shallow water ocean zone?

• The long water column protects small organisms from being eaten by large predators.

• Cooler water temperatures cause a decrease in dissolved oxygen needed by organisms.

• Sunlight penetration increases algae growth and provides food for a variety of organisms.

• Hydrothermal vents provide heat and dissolved minerals needed by some organisms to survive.

How are sedimentary rocks formed?

• by hardening and cementing of layers of sediment

• by fossils getting buried in various layers of sediment

• by cooling and hardening of hot molten rock from inside the Earth

Which hazard must submersible vehicles overcome while exploring and studying the deep ocean zone?

• high waves

• increased salinity

• high water pressure

• underwater mountain ranges

What do earthquakes tell scientists about the history of the planet?

• Earth's climate is constantly changing.

• The continents of Earth are continually moving.

• Dinosaurs became extinct about 65 million years ago.

• The oceans are much deeper today than millions of years ago.

Which will occur if humans continue to overload water systems with excess nutrients?

• chemosynthesis

• nitrification

• photosynthesis

• eutrophication

Which describes the best use of carbon-14 in collecting geologic evidence?

• to compare the decay of uranium to lead

• to date artifacts less than 50,000 years old

• to date sedimentary rock layers

• to identify index fossils

Which is a bioindicator?

• current

• insect

• rock

• water

Which is the best example of a point source pollution?

• runoff from fields

• pesticides sprayed into the air

• oil spill from a boat in the Atlantic Ocean

• smoke from multiple industries in a large city