Chapter 14: Impacts Flashcards
How old is the sun, approximately?
A) 5 million years old
B) 10 million years old
C) 5 billion years old
D) 10 billion years old
E) 13 billion years old
C) 5 billion years old
Scientists classify particles in the solar system by
A) diameter and temperature
B) speed of entry and mass
C) diameter and speed of entry
D) composition and diameter
E) mass and composition
D) composition and diameter
The figure shows what type of particle from the solar system?
A) Asteroid
B) Comet
C) Meteorite
D) Meteor
E) Meteoroid
B) comet
A particle from the solar system that strikes the Earth is called a
A) asteroid
B) comet
C) meteorite
D) meteor
E) Meteoroid
C) meteorite
What is the significance of the Tunguska River Valley in Siberia in terms of asteroids?
A) Site of enormous wildfires in prehistoric times caused by an asteroid.
B) Site of the largest impact crater ever recorded on Earth.
C) Largest meteorite was sighted.
D) Location of crater that marks the asteroid that killed the dinosaurs.
E) Large airburst of an asteroid occurred in recent history.
E) large airburst of an asteroid occurred in recent history
The figure shows an example of what type of crater?
A) Rebound
B) Simple
C) This is not a crater
D) Complex impact
E) Soft impact
D) complex impact
Which is not a reason craters are more common on the moon than the Earth?
A) Ocean impact sites have been buried by marine sediment.
B) Very few meteoroids enter Earth’s atmosphere.
C) Ocean impact sites have been destroyed by plate tectonic processes.
D) Land impact craters have eroded.
E) Smaller meteoroids tend to disintegrate in Earth’s atmosphere.
B) very few meteoroids enter Earth’s atmosphere
Which concept is now used to explain the processes that form the Earth’s landscapes?
A) punctuated uniformitarianism
B) catastrophism
C) uniformitarianism
D) none of these are used
E) gradualism
A) punctuated uniformitarianism
How is mass extinction characterized?
A) All of these are characteristics
B) If there are any survivors
C) How large the volcanic eruption is
D) How much the climate changes within a period
E) Sudden loss of large numbers of plants and animals relative to the number of new species being added
E) sudden loss of large numbers of plants and animals relative to the number of new species being added
Which has not been a cause of mass extinction?
A) Movement of tectonic plates
B) Asteroid impact
C) Large basaltic eruption
D) Flooding from tsunami
E) Volcanic activity
D) flooding from tsunamis
Which of the following was not a result of the K-Pg Boundary mass extinction?
a) About 70 percent of all land and marine genera died off
b) Set the stage for the evolution of mammals
c) Widespread wildfires were experienced everywhere
d) Demise of swimming reptiles
e) Demise of large dinosaurs on land
C) widespread wildfires were experienced everywhere
The impact or airburst of an asteroid or comet is not a direct cause of
A) tsunamis.
B) mass wasting.
C) wildfires.
D) climate change.
E) flooding.
E) flooding
Which has the most influence on the consequences of an airburst or direct impact?
A) Population of the site of airburst or impact
B) Size of the extraterrestrial object
C) Probability that it will occur
D) Time between impacts or airbursts
E) None of these influence the consequences
A) population of the site of airburst or impact
What have scientists been doing to minimize the impact hazard?
A) Developing weapons to destroy an extraterrestrial object larger than 1 km (~3300 ft) in diameter.
B) Building bunkers to hold everyone in case of a large impact.
C) They have been working on all of these.
D) Identifying and categorizing nearby objects that may threaten Earth.
E) Working to break up all extraterrestrial objects that are within a certain distance from Earth.
D) identifying and categorizing nearby objects that may threaten Earth
