WorksheetsEarth Science Review
Total questions: 65
Worksheet time: 33mins
There are many different watersheds in the United States. The boundaries of a watershed are determined by
number of people in the region
the number of rivers
height of the land
type of weathering
A __________ is where sediments often build up at the mouth of a river, where it enters a larger body of water.
delta
alluvial fan
deposition
topography
Able to allow water to pass through
Impermeable
Runoff
Ground water
Permeable
Surface runoff in a watershed that empties into the Mississippi river watershed has become polluted by sewage and fertilizers.
Which of the following environments might become polluted as a result?
I. surface water in the watershed
II. the groundwater in the watershed
Ill. the ocean that the Mississippi river flows into
I only
ll only
I and ll
l, ll, and lll
The name of the line that is the upper level of the zone of saturation:
Zone of Saturation
Zone of Aeration
Water Table
Watersheds contain both groundwater and surface water. Gravity causes water to seep into the ground or flow downhill to the lowest point. How can groundwater become surface water?
Groundwater cannot flow up against the force of gravity, so ground water cannot become surface water
The surface of the land is below the level of the water table and a stream or lake will form
The rocks become less permeable
That's just crazy talk. Groundwater stays in the ground forever.
Laura was creating a Venn diagram to compare an alluvial fan and a delta. Which statement would she place in the center?
Sediments are deposited by water when it slows down
Formed at the base of mountains (dry land)
Formed at the base of rivers when they reach bays, oceans or large lakes
Alluvial fans and deltas have nothing in common.
Wind and rain are major causes of erosion. Which area of Texas would most likely be affected by wind and rains from hurricanes?
Edward's plateau
Gulf coast prairie
Piney Woods of East Texas
Cross timbers
Deltas and alluvial fans are both formed by the deposition of rivers when the water slows down and the sediments fall out of the the water. How is a delta different from an alluvial fan.
A delta is at the base of a mountain and an alluvial fan is at the top of the mountain
An alluvial fan is at the base of a mountain and a delta is where the river empties into a lake, bay or ocean
Deltas and alluvial fans are the same thing
Deltas get larger and turn into alluvial fans.
Succession that occurs in an area with no soil
ecological succession
primary succession
secondary succession
pioneer species
The first organisms that appear in an ecological community are called
secondary species
primary species
succession species
pioneer species
Natural disasters such as flooding and tornadoes are linked to ________________.
primary succession
secondary succession
both primary and secondary succession
pioneer species
What is the other name given to lichen or algae during primary succession?
pioneer species
volunteer species
founder species
conqueror species
How do lichens break down rock?
With tiny hammers
Chemical weathering, using acids from their roots
lichens produce oxygen that cause oxidation
lichens use root pry followed by ice wedging
Reaches a climax community quicker because soil has already been formed
primary succession
secondary succession
both types of succession
During succession, as biodiversity increases ----
consumers enter before producers
producers enter, followed by consumers
only producers develop
only the species of consumers add to the biodiversity as they wait for the plants to grow
As an ecologist, how do you know when the climax community has formed?
There is biodiversity
There is less change in plant and animal species
Equilibrium has been reached
all of the above
Ten years ago in an abandoned lot, there was once only dirt and grass. Now there are many species of plants and animals. What can you infer about the process that happened there?
People came and planted all the plants
People left rocks there so lichens could make more soil
There are more nutrients in the soil as the plants die, decompose and regrow every year.
Animals will dig up the plants.
Why is primary succession so much slower than secondary succession?
It takes hundreds of years to develop soil so that plants can grow
Plants grow slowly in areas of primary succession
Both types of succession take the same amount of time
Many areas of California were destroyed by fire. Those areas will begin the process of succession to restore equilibrium. What would happen to the process if the fires happened annually (every year).?
The areas could never reach the final stage of succession
Fires would burn the soil down to rock
Fires would clear the land and make more room for trees and birds
Water used to fight the fires would decrease the aquifer
Which statement best explains why this process results in weathering?
This catastrophic event starts by lightening or a careless human..
Volcano
Tornado
Wildfire
Drought
Which of these is NOT an impact to the ecosystem after a hurricane?
Fires throughout the area
Poor water quality in the area
Erosion of beaches
Massive flooding
What catastrophic event could cause plants to die due to salt water invasion?
Hurricane
Tornado
Flood
Wild Fire
What forms at the mouth of a river as it enters the ocean and deposits sediments?
ponds
deltas
tributaries
creeks
Catastrophic events impact ecosystems as well as people
True
False
Deltas and alluvial fans are both formed by the deposition of rivers when the water slows down and the sediments fall out of the the water. How is a delta different from an alluvial fan.
A delta is at the base of a mountain and an alluvial fan is at the top of the mountain
An alluvial fan is at the base of a mountain and a delta is where the river empties into a lake, bay or ocean
Deltas and alluvial fans are the same thing
Deltas get larger and turn into alluvial fans.
What is the relationship between ecological succession and equilibrium in an ecosystem?
Ecological succession helps maintain equilibrium in an ecosystem.
Ecological succession prevents ecosystems from ever reaching equilibrium.
There is no relationship between ecological succession and equilibrium.
Ecological succession and equilibrium are the same thing
A hurricane hits a coastal prairie and destroys the habitat. Years later there is an appearance of small plants with rapidly spreading roots on newly formed coastal sand dunes. This vegetation describes--
a microhabitat
primary succession
secondary succession
biodiversity
What is the main difference between primary and secondary succession?
primary begins with soil formation and secondary starts with soil intact
primary is the first stage and secondary is the second stage
primary builds plant communities and secondary builds animal communities
primary occurs after natural disasters and secondary occurs after disturbances to the ecosystem
In the process of ecological succession, grasses appear before shrubs because grasses -
loosen the dirt for new trees to take root
provide food for animals returning to the area
require plenty of sunlight to make their own food
can grow rapidly even in areas with shallow soil
