Which statement best compares the amount of water present on Earth today with the amount present millions of years ago?

There is about the same amount of water on Earth today.

What is the best method for the preservation of water quality?

Local/government organizations should monitor lakes and streams

Aquifers are sources of

Freshwater, which is used for drinking, bathing, and watering crops

What provides evidence that supports the evolution of organisms and landforms?

Plate tectonics theory and law of superposition

If all pollution is caused by a source, how is it possible to have non-point source pollution?

The source of pollution is not found in the same area of the polluted site

Which conditions indicate that a water system is healthy?

high numbers of bioindicators, low temperature, and high dissolved oxygen

What can be concluded by studying the index fossils of the two rock samples?

The ages of rock layer 3 Y and rock layer 2 Z are the same

Which environmental condition most likely existed at the time a fossil formed?

Organism remains were buried with little oxygen.

What is the likely source of pollution if there are frequent algal blooms in a river?

Fertilizer runoff from nearby farms

Which example represents a point source pollutant?

Heated water released from a power plant

In the sedimentation step involved in water treatment, the water is allowed to stand for 24 Hrs. What is this purpose?

It allows impurities to sink to the bottom

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Earth Science Check-In Review 24

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Questions 25

Answers

1
What is added during final stages of water treatment that helps kill microorganisms and bacteria?
Chlorine
Alum
Sodium bicarbonate
Flocs
2
Answer the question on the image.
new continent creation
oceanic plate subduction
Underwater mountain ranges
sea floor spreading
3
Using the pie graph, what percentage of water on Earth is immediately drinkable?
1%
2%
3%
97%
4
How does upwelling help sustain healthy fish populations at the surface of the ocean?
By providing warm water
By providing oxygen
By providing nutrients
By providing carbon dioxide
5
Which organism is at the base of a marine food web?
Whale
Crab
Zooplankton
Phytoplankton
6
On which of the following days did the turbidity of drinking water in this city reach an unsafe level?
Monday
Thursday
Tuesday
Friday
7
Which statement best compares the amount of water present on Earth today with the amount present millions of years ago?
There is slightly more water on Earth today
There is significantly more water on Earth today
There is about the same amount of water on Earth today.
There is significantly less water on Earth today
8
What is the best method for the preservation of water quality?
Local/government organizations should monitor lakes and streams
Humans should cease all recreational & agricultural use of water resources
Humans should toilet/bathe in local rivers and streams to avoid using tap
Water treatment plants should increase the use of chemicals to clean water
9
Aquifers are sources of
Oil, which is drilled from the aquifer and used to power homes
Saltwater, which is pushed through turbines to make energy
Freshwater, which is used for drinking, bathing, and watering crops
Silica, which is used to make glass and paper products.
10
What provides evidence that supports the evolution of organisms and landforms?
Law of segregation and plate tectonics theory
Plate tectonics theory and law of superposition
Law of segregation and law of superposition
Big bang theory and plate tectonics theory
11
Which contributes most in supporting life on the deep ocean floor?
Cold water temperatures
Extreme water pressure
Hydrothermal vents
Lack of predators
12
The graph shows the pH levels in a river recorded at four different sites (W, X, Y, and Z). Which has the poorest water?
Site Z
Site X
Site Y
Site W
13
Answer the question on the image.
Layer I is older than Layer B.
The left part of Layer F is the same age as Layer M.
The left part of Layer B is younger than the right part.
Layer R is older than Layer M.
14
If all pollution is caused by a source, how is it possible to have non-point source pollution?
The source of pollution is not found in the same area of the polluted site
There is only one source of pollution that can be identified
The source cannot be identified/comes from many different unknown sites
The pollution is transferred from place to place by water or air
15
Which conditions indicate that a water system is healthy?
high numbers of bioindicators, low temperature, and high dissolved oxygen
low temperature, low dissolved oxygen, and high numbers of bioindicators
low dissolved oxygen, high temperature, and low nitrates
high dissolved oxygen, low temperature, and high nitrates
16
What can be concluded by studying the index fossils of the two rock samples?
The ages of rock layer 3 Y and rock layer 3 Z are the same
The ages of rock layer 3 Y and rock layer 2 Z are the same
The ages of rock layer 2 Y and rock layer 2 Z are the same
The ages of rock layer 1 Y and rock layer 4 Z are the same
17
Which environmental condition most likely existed at the time a fossil formed?
Organism remains were deposited in an area of open space.
Organism remains were covered by lava flow.
Organism remains were buried in an area where a lot of erosion occurred.
Organism remains were buried with little oxygen.
18
Answer the question on the image.
Tertiary
Mesozoic
Cenozoic
Cretaceous
19
In which oceanic zone do clams and crabs survive by burrowing in the sand to adapt to a frequent changing environment?
Deep ocean
Open ocean
Intertidal
Oceanic
20
Which sequence correctly arranges the rock layers from youngest to oldest?
1, 2, 3, 4, 5
5, 4, 3, 2, 1
2, 1, 3, 4, 5
2, 5, 4, 3, 1
21
What is the likely source of pollution if there are frequent algal blooms in a river?
Warm water discharge from nearby factories
Oil discharge from a nearby oil rig
Fertilizer runoff from nearby farms
Acidification of water from acid rain
22
In which step would lime and alum be added?
Filtration
Coagulation and floc formation
Disinfect and aeration
Sedimentation
23
Which of the following has the biggest effect on deep ocean currents?
Temperature and wind
Temperature and salinity
Tides and wind
Tides and salinity
24
Which example represents a point source pollutant?
Chemical runoff from lawns
Acid rain caused by exhaust from vehicles
Oil and gasoline discharged from cars
Heated water released from a power plant
25
In the sedimentation step involved in water treatment, the water is allowed to stand for 24 Hrs. What is this purpose?
It allows impurities to sink to the bottom
It removes harmful microorganisms from the water
It allows all impurities to float to the top of the water
It causes suspended impurities to clump together

Earth Science Check-In Review 24 Flashcards | StudBud