Mr. Pykiet Science Unit One

Which statement best describes how the Great Rift Valley in Africa formed?

• The rift valley formed when the crust pulled apart.

• The rift valley formed due to subduction.

• The rift valley formed similarly to an island arc.

• The rift valley formed at a convergent boundary.

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

• gravity

• water flow

• expanding gases

• convergent boundaries

Which statement best describes this eruption?

• Its magma is high in silica.

• Its magma has low viscosity.

• Its gases are released in rapid bursts.

• Its lava came from an explosive eruption.

Which feature forms when magma cools beneath Earth’s surface?

• geysers

• calderas

• batholiths

• vents

Which increases along faults and leads to rock breaking?

• damage

• earthquake

• focus

• stress

Which statement describes seismic waves?

• They carry energy.

• They move in one direction.

• They travel from the epicenter.

• They only vibrate at Earth’s surface.

Which statement describes the damage that results from earthquakes?

• Amount of damage can be used to determine intensity.

• Damage can be measured using the Richter scale.

• The amount of damage increases as magnitude decreases.

• Earthquakes that cause maximum damage are the most common.

Which is one step that geologists use to find the epicenter of an earthquake?

• They look at data from at least one seismograph.

• They measure the difference between arrival of P waves and S waves.

• They draw circles around the epicenter from three locations.

• They obtain information about the intensity of earthquakes from seismographs.

Which correctly lists three properties that are used to identify minerals?

• luster, weight, streak

• magnetism, size, weight

• size, weight, luster

• streak, luster, magnetism

Molten materials cool at different rates. Which property of a mineral does this affect?

• color

• luster

• crystal size

• crystal shape