AnswersPARTA - EOP PGCPS BIOGEOCHEM CR FALL2026 - 798113Lab: Environmental Changes in a Watershed

Lab: Environmental Changes in a Watershed — Cumulative exam Answers

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21
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Which describes a condition of the neritic zone?

A
few organisms
B
ample sunlight
C
changing salinity
D
frigid temperatures
22
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Which statement describes earthquakes?

A
They release energy.
B
They are caused by reduced stress in rocks.
C
They begin at the epicenter.
D
They result from movement on Earth’s surface.
23

Why is the Continental Divide important?

A
It forms two river systems.
B
It combines two large ice sheets.
C
It separates two major watersheds.
D
It splits two large rivers through tributaries.
24

Existing rocks are buried and forced toward the mantle, increasing heat and pressure. This is the first step in the formation of metamorphic rocks.Which best describes the next step in the formation of metamorphic rocks?

A
Buried rocks melt deep within the mantle.
B
Lava melts underlying rocks, which crystallize into new minerals.
C
Rocks that were buried are exposed at Earth’s surface, where they are weathered and eroded.
D
Magma pockets rise, which increases heat, and minerals change due to temperature and pressure.
25

How are S waves and surface waves similar?

A
Both arrive after P waves.
B
Both compress the ground.
C
Both travel through liquids.
D
Both produce minimal ground motion.
26

What is unique about obtaining water from an artesian well?

A
The water is heated by magma or hot rocks.
B
The water is found in an impermeable layer.
C
The water is under pressure naturally and no pump is needed.
D
A mechanical pump must be installed to bring water to the surface.
27

Which occurs just before a volcanic eruption?

A
Lava flows onto the sides of the volcano.
B
The expanding gases push magma through the pipe.
C
A pocket of magma forms beneath the volcano.
D
New rocks are formed as lava hardens.
28

What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44 N at an angle of 35° above the horizontal?

A
0.23 m/s2
B
0.28 m/s2
C
2.52 m/s2
D
3.60 m/s2
29

The diagram shows the embryological development of a species.

Question illustration
A
The species must be human because it has gill slits, limb buds, and a tail.
B
The species could be human because it has gill slits, limb buds, and a tail.
C
The species is not related to a human because it has gill slits.
D
The species is not related to a human because it has a tail.
30

Which example best illustrates a method to show differences among Earth’s layers?

A
Carson models how the continental crust varies in thickness.
B
Marisol records atmospheric and oceanic temperatures at several beaches.
C
Eliza analyzes seismic wave activity from an earthquake using a computer model.
D
Oscar determines the pressure at different depths of Earth’s crust.
31

Which force keeps the planets from floating off into space?

A
Earth’s gravity
B
the Sun’s gravity
C
the moon’s gravity
D
Milky Way’s gravity
32

Look at this image of a star cluster.

Question illustration
A
open
B
binary
C
globular
D
eclipsing
33

A college student has been assigned to write captions for a new textbook on gravity and motion. This is one of the pictures from the textbook.

Question illustration
A
The moon moves toward the Sun due to gravity.
B
The moon will move away from Earth because of inertia.
C
The moon would move in a circular path if there were no forces.
D
The moon would not stay in orbit without the pull of Earth's gravity.
34

A car manufacturer wants to change its car’s design to increase the car’s acceleration. Which changes should the engineers consider making to the design?

A
increase the force that the engine provides
B
decrease the force that the engine provides
C
increase the mass of the car
D
decrease the mass of the car
E
increase the top velocity the car can travel
F
decrease the top velocity the car can travel
35

This is a map that shows hot spots around the world.

Question illustration
A
formed due to subduction
B
formed in the middle of a plate
C
formed at a divergent boundary
D
formed at a convergent boundary
36

The picture shows a food web.

Question illustration
A
fox and rabbit
B
rabbit and grasshopper
C
shrew and snake
D
snake and fox
37

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. There has been much debate about the classification of these creatures. Some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. The data equally support both cases.Which statement best explains how to draw a cladogram that includes the rynchosaur?

Question illustration
A
Draw the cladogram for amphibians.
B
Draw the cladogram for reptiles.
C
Draw two cladograms, both showing the traits, and leave it as a hypothesis.
D
Draw two cladograms, both showing the traits, and have scientists vote.
38

Which phrases describe S waves?

A
behave like a ripple
B
move through liquids only
C
are classified as primary waves
D
are known as a type of direct evidence
39

A dolphin catches and eats small fish.Which type of organism is described in this scenario?

A
consumer
B
decomposer
C
parasite
D
producer
40

The image shows a cross section of a landscape and a well.

Question illustration
A
1
B
2
C
3
D
4

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