Geoscience Final Review

Scientists say that is you went from Earth's surface to its core, the temperature would:

• drop due to a lack of heating by the Sun

• drop because Earth's core is made of cold rock

• change very little

• rise due to solar activity

• rise due to radioactivity

Oxygen atoms are found in the air. Where else could you find oxygen atoms?

• As part of a piece of wood

• As part of a rock

• In molten lave

• Any of the above is possible

• None of the above; oxygen atoms can only be in the air

Scientists say that there is abundant free oxygen in Earth’s atmosphere because:

• Earth has an atmosphere

• Earth has oceans

• Earth has life

• Earth has ice caps

Which of the following is most important to global climate?

• The ozone hole

• Automobile exhaust

• Earth's internal heat

• Solar energy

• Plate tectonics

One type of fish fossil is found only in a rock layer near the bottom of a canyon formed in undisturbed

rock. A different kind of fish fossil is found only in a rock layer 4,000 feet higher, near the top of the

canyon. Which statement would a scientist most likely offer to explain this situation?

• The fish in the lower layer lived in deeper water than the other fish.

• The fish in the upper layer lived more recently than the other fish.

• The rock in the lower layer is denser than the rock in the upper layer.

• The rock in the upper layer must have formed in fresh water.

A ‘stable’ element will be least likely to:

• be attracted by a magnet

• undergo radioactive decay

• conduct electricity

• dissolve in water

Water is contained in glaciers as ice. In order for liquid water to be formed from the glaciers:

• energy is required

• a chemical reaction has to take place

• there must be constant daylight

• humans must intervene

• carbon must be present

Convection of Earth's mantle will cause Earth's:

• spin to reverse

• interior to cool down

• surface to be covered with lava

• oceans to boil away

• axis to change its tilt

Which of the following statements would a scientist say was true?

• Some mountains have formed due to many volcanic eruptions over a long time

• Earth's climate went through changes before there were humans

• Processes like landslides and avalanches are related

• More than one of the above

• None of the above

If the temperature of Earth’s interior was the same as at the surface, then the movement of the

continents would:

• stop

• slow down

• stay the same

• speed up

• there is no way to predict how motion of the continents would be affected