Review Material in Science 7

Which of the following statements about faults is TRUE?

• A type of volcano that forms when magma escapes from the Earth's crust.

• A reverse fault forms when the hanging wall moves downward relative to the footwall.

• A normal fault occurs when the rocks on one side of the fault are pushed up relative to the other side.

• A strike-slip fault happens when the blocks of rock on either side of the fault slide horizontally past each other.

What is the primary factor that determines the magnitude of an earthquake?

• The depth of the earthquake's focus.

• The type of fault responsible for the earthquake.

• The distance from the epicenter to the affected area.

• The amount of energy released by the seismic event.

Which of the following is a potential effect of an earthquake on a community?

• Increased rainfall and flooding.

• Growth of vegetation and wildlife.

• Displacement of tectonic plates.

• Damage to buildings, infrastructure, and loss of life.

What fault plane is nearly vertical, and the movement is predominantly lateral along the fault plane.

Evaluate responses using AI:

OFF

Which fault plane is inclined at an angle greater than 45 degrees from the horizontal, and the hanging wall moves upward relative to the footwall.

Evaluate responses using AI:

OFF

It refers to the fault plane which is inclined at an angle less than 45 degrees from the horizontal, and the hanging wall moves downward relative to the footwall.

Evaluate responses using AI:

OFF

How does earthquake intensity differ from earthquake magnitude?

• Magnitude measures the energy released, while intensity measures the damage caused.

• Magnitude measures the area affected, while intensity measures the frequency of aftershocks.

• Magnitude measures the ground shaking, while intensity measures the duration of the earthquake.

• Magnitude measures the depth of the focus, while intensity measures the distance from the epicenter.

Which of the following best describes the epicenter of an earthquake?

• The area where the ground shaking is most intense.

• The point on the Earth's surface directly above the focus.

• The point within the Earth where the fault rupture begins.

• The deepest point within the Earth where the seismic energy is released.

How do earthquakes occurring underwater or along subduction zones contribute to the formation of tsunamis?

• Underwater earthquakes trigger volcanic eruptions, leading to the formation of tsunamis.

• Subduction zone earthquakes cause the release of toxic gases, resulting in the formation of tsunamis.

• Subduction zone earthquakes cause the sudden uplift of the seafloor, displacing water and generating tsunami waves.

• Underwater earthquakes release energy that generates seismic waves, which travel through the water and create tsunami waves.

What is the PHIVOLCS FaultFinder tool used for?

• To map the best locations for building new communities.

• To measure the temperature changes before an earthquake.

• To predict the exact time and magnitude of future earthquake.

• To identify the nearest fault system and assess earthquake risks in a community.