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- 1. Multiple Choice
The Diagram shows fossils and rock features.
How does intrusion X compare to the ages of the other rock layers and fossils in this geologic column?
Intrusion X is older than layer Y and Z.
Intrusion X is younger than all the layers.
Intrusion X is older than the clam and broadleaf.
Intrusion X is younger than the broadleaf and fern fossils.
- 2. Multiple Choice
The diagram shows a series of rocks layers and fossils.
Which is true?
Layer W is older than Intrusion X
Intrusion X is younger than layer Z and Y
The broadleaf fossil is older than the fern fossil
The clam fossil is young than the reptile bone fossil.
- 3. Multiple Choice
The diagram shows a series of rock layers and Fossils.
Which is younger than the clam fossil?
Layer Z
Broadleaf
intrusion X
Reptile Bone
- 4. Multiple Choice
Scientists have found traces of organic compounds on some meteorites. This finding would support which of these hypotheses about the origin of macromolecules on Earth?
Organic molecules arrived on Earth with space debris.
Organic molecules developed as Earth cooled in space.
Organic molecules formed in space during the big bang event.
Organic molecules received energy from ultraviolent radiation from space.
- 5. Multiple Choice
A fossil discovered in Colorado dates from the early Mesozoic era. A year later a similar fossil is found in Wyoming that also dates from the early Mesozoic era. These two organisms most likely lived in...
the same environment at about the same time.
the same environment at different times.
different environments at about the same time.
different environments at different times.
- 6. Multiple Choice
Which of these provides the BEST evidence that the distribution of Earth's oceans has changed over time?
hot spots on the ocean floor.
seismic activity along plate boundaries
sediment buildup on continental slope
marine fossils found on land masses
- 7. Multiple Choice
Which BEST explains how nutrients, slat, sediment, and pollutants get into estuaries and oceans?
from precipitation falling over the estuaries and ocenas
from organisms living and dying in estuaries and oceans
from rivers and streams flowing into estuaries and oceans
from asteroids and comets impacting Earth at estuaries and oceans
- 8. Multiple Choice
Which accurately describes the relationship between nutrients and life-forms in an estuary?
as nutrients increase, the number of life-forms increase
as nutrients decrease, the number of life-forms increase
as nutrients increase, the number of life forms stay the same
as nutrients decrease, the number of life-forms stay the same
- 9. Multiple Choice
Which will most likely result if there is increased upwelling in a coastal area?
more aquatic life
less nutrients in the water
higher water temperatures
fewer nitrates
- 10. Multiple Choice
A small city gets its drinking water from the river running through its center. This river is fed by rivers that flow down the mountains nearby. How would excessive rainfall in the mountains most likely affect the turbidity of this local water source?
Heavy rainfall would decrease the turbidity of the river downstream.
Heavy rainfall would increase the turbidity of the river downstream.
Heavy rainfall would increase the turbidity only in rivers upstream.
Heavy rainfall would decrease the turbidity of only rivers upstream.
- 11. Multiple Choice
Which factors can have the greatest effect on the health of a river?
type of soil and salintiy
nitrate levels and turbidity
human consumption and pH
natural disasters and tidal changes
- 12. Multiple Choice
Which best determines the health of a lake used as a source of freshwater?
its depth and width
its temperature and pH
its location and depth
its temperature and depth
- 13. Multiple Choice
Which best explains why water quality standards have been created to ensure heavy metals in water are kept to a minimum?
heavy metals are linked to toxicities in humans and large amounts of heavy metals should not be consumed.
Heavy metals can stain ceramic surfaces in homes and cost homeowners hundreds of dollars in repairs.
Heavy metals can cause discoloration of water and can cause a strong unpleasant smell.
Heavy metals can corrode pipes and cause problems with internal plumbing.
- 14. Multiple Choice
What step in the water treatment process involves the removal of sediment?
aeration
desalination
disinfection
filtration
- 15. Multiple Choice
Which best explains a way of protecting water for human consumption?
Ban the use of lakes and rivers for recreation.
Allow dumping of some waste into lakes and rivers.
Reduce the use on lakes and rivers for irrigation of crops.
Improve water quality standards for industries located on lakes and rivers.
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