25 questions
The San Andreas fault is a transform fault. The map below shows a student’s approximation of where the fault line crosses through the United States. Students were asked to make maps predicting which way land would most likely move over thousands of years. Which map best predicts the likely movement of land along the fault line over thousands of years?
This satellite photograph shows an area in Alaska after a fire occurred. Which statement best describes the most likely effect the fire had on the river in the 12 months after it occurred?
Less sediment flowed into the river because the fire heated up the soil and made it drier.
The amount of vegetation increased and less sediment flowed into the river because the fire produced ash that mixed with the soil.
More sediment flowed into the river because the fire destroyed most of the vegetation holding the sediment in place.
More sediment flowed into the river because the fire disrupted animal habitats and caused animals to leave the area.
A mid-ocean ridge separates the Pacific plate and the Nazca plate off the western coast of South America. Which statement best describes the relative motions of the Pacific and Nazca plates?
The Pacific and Nazca plates are both moving to the east.
The Pacific and Nazca plates are both moving to the west.
The Pacific plate is moving to the west, and the Nazca plate is moving to the east.
The Pacific plate is moving to the east, and the Nazca plate is moving to the west.
The topographic map shows the location of a park ranger at Point X when a message is received that an injured hiker needs help at Point Z. Which of these is closest to the difference in elevation between the locations of the ranger and the injured hiker?
2,050 m
450 m
910 m
3,650 m
Thunderstorms are more common in some areas than in others. The map shows the average number of thunderstorms per year in different parts of the United States. Why are there significantly more thunderstorms in Florida than in California?
The state of Florida is smaller than the state of California
The air in Florida is more stable than the air in California.
The air above Florida holds less moisture than the air above California.
The ocean currents near Florida are warmer than the ocean currents near California.
The image shows a plate boundary. Arrows have been added to indicate the movement of the plates. What plate boundary feature is also shown?
A ridge formed by an inactive convergent boundary
A valley forming at an active divergent boundary
A fault forming at an active transform boundary
A volcano formed by an active transform boundary
The satellite photo below shows San Francisco, California, which has many miles of coastline and an inland bay. Which area of the coastline has most likely experienced the greatest effect of erosion from waves over hundreds of years?
Area N
Area P
Area S
Area T
The map below shows the locations of four active volcanoes in the Caribbean Sea. What do these volcanoes indicate about plate tectonics in the region?
The volcanoes form an island arc, indicating a converging plate boundary.
The volcanoes form a line, indicating a diverging plate boundary.
Two plates are moving past each other, causing faulting and magma formation.
Two plates are moving apart, creating new seafloor.
A student stands at the point marked X on the topographic map below. What height in meters must the student climb in order to reach the top of the hill?
253
200
150
323
The weather map shows the weather conditions for one day across the United States. Based on the weather map, which city will most likely experience decreasing temperatures during the next 24 hours?
Denver, because it is raining there
Minneapolis, because a cold front is approaching
Atlanta, because a warm front is approaching
Houston, because it is in a high-pressure area
Scientists recently discovered that rocks collected from the Franklin Mountains in West Texas and rocks collected from mountains in eastern Antarctica were exactly the same age. Further research showed that the rocks were chemically and geologically the same and came from the same magma source. This discovery provides evidence of —
coastal erosion
plate tectonics
ocean currents
glacial melting
The satellite image below shows a ship channel between South Padre Island and Boca Chica beach in South Texas. Sand is sometimes removed from the ship channel through a process called dredging to make it easier for ships to travel through. Recently sand from the bottom of the channel was moved to area beaches. Without this transfer of sand, what would most likely occur in this area in the future?
The ship channel would become deeper, and the island would move west toward the mainland.
The ship channel would become shallower, and the beach would become narrower.
The ship channel would become narrower, and the island would become completely covered with water.
The ship channel would become wider, and the island would sink into the Gulf of Mexico.
The diagram below shows a model of the movement of two tectonic plates. When the plates collide, one plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce —
fossil layers
volcanic islands
deep-sea sediment
seafloor spreading
The points labeled W and Y on the topographic map below show the campsites of two families. Each family hiked to the elevation on the map marked X. The arrows show the paths taken by both families. What was the change in elevation, to the nearest ten meters, for the family that took the steepest path to Point X?
100
230
120
80
Hurricanes and similar storm systems begin over oceans. The map below shows average surface temperatures of the oceans in the summer. Based on the map, which area probably produced the most violent storm systems?
Area 1
Area 2
Area 3
Area 4
The Himalayan mountains are shown on the map below. Which student correctly identified the geologic process that formed the Himalayan mountains?
Student 1
Student 2
Student 3
Student 4
The model below shows two continental plates. The folded mountains in this model form at which type of plate boundary?
Transform boundary
Divergent boundary
Subduction boundary
Convergent boundary
The satellite photograph below shows a large meteorite crater that is 1200 m in diameter and 170 m deep. This crater is located in a flat, arid part of northeastern Arizona. How will this crater most likely change over time?
It will get deeper as it fills with water.
It will rise up like a volcanic crater
It will become less deep as the rim erodes.
It will widen as it fills with lava.
What is one condition that is necessary for a hurricane to form?
Warm ocean water
A strong cold front
Cold ocean water
A strong warm front
The thick black lines on the map below show the locations of mid-ocean ridges. Which geologic feature is most likely to form at a mid-ocean ridge?
Peninsula
Volcano
Delta
Plateau
A section of a topographic map is shown below. What is the difference in elevation in meters between Point X and Point Y on the map?
360
480
120
1100
Rift valleys can form when fractures in Earth’s crust widen. The valley walls slowly move at a rate of only a few millimeters a year. Which of these best describes the type of tectonic activity that forms rift valleys?
Rift valleys form where a continental plate moves under an oceanic plate.
Rift valleys form where a plate slides horizontally past another plate.
Rift valleys form where two plates move away from each other.
Rift valleys form where an oceanic plate moves under another oceanic plate.
The satellite image below shows a portion of the Namib Desert in Africa. This is an ancient, sandy desert with dunes that can be up to 305 m tall. The Namib Desert extends inland from the Atlantic Ocean between 80 km and 200 km and receives only 5 mm to 76 mm of rain each year. A satellite picture of this same area taken weeks before shows that the shape and location of some sand dunes have changed. Which of these most likely caused the changes in the dunes?
Ocean waves
Flowing rivers
Blowing wind
Crustal uplift
The map shows some of Earth’s plate tectonic boundaries. Based on the map, volcanic activity would most likely be found at —
Location W
Location X
Location Y
Location Z
In 2011, Typhoon Nesat struck the Philippines and caused widespread flooding. After hitting the Philippines, Typhoon Nesat was predicted to hit the large city of Hanoi, Vietnam. If Typhoon Nesat had continued along the same path, which development would most likely have reduced its strength before it hit Hanoi?
The formation of a low-pressure area south of Bangkok
The formation of a high-pressure area south of Bangkok
Cool water moving into the sea east of Hanoi
Warm water moving into the sea east of Hanoi