Go to the Quizzes Page Volcanic Hazards 0% 98 Created by AbuBakrShalabi Please write your name and email to receive your certificate. 1 / 20 How could predicting the future eruption of a volcano benefit people? Know the exact time of the volcanic eruption Alert people to evacuate the area before the eruption Work to delay the eruption or eliminate it Enable people to climb hills and watch the eruption 2 / 20 Which of the following is NOT studied by geologists to predict volcanic eruptions? ground deformation change in shape of the volcano earthquake swarms animal behavior 3 / 20 What is the technology used to predict volcanic eruptions so that populations can be warned of a possible eruption? GPS Doppler Radar Gas Sensors Seismometer that detects earthquakes 4 / 20 How are the hot spot volcanoes formed? Hot spots form when plumes of magma rise from Earth's mantle to Earth’s crust. Hot spots form along convergent boundaries where the plates come closer to each other. Hot spots form at both convergent and divergent boundaries where the plates move. Hot spots form along divergent boundaries where the plates part away from each other. 5 / 20 What is lava? Molten rock outside a volcano Small rocks Molten rocks inside a volcano Magma 6 / 20 The Hawaiian Islands are examples of volcanoes that are associated with a _______. hot spot transform plate boundary convergent plate boundary divergent plate boundary 7 / 20 A volcano that has erupted in the last 2000 years but not recently is known as........... Dormant Active Angry Extinct 8 / 20 The following are signs that alert for a volcanic eruption EXCEPT ______________. Gas emissions Weather changes Deformation Earthquakes 9 / 20 Which type of volcano is formed in the middle of the tectonic plates? Dormant volcano Hot spot volcano Extinct volcano Active volcano 10 / 20 A volcanic eruption can alter the climate because.......... dust and gas in the upper atmosphere reflect and absorb solar radiation they trigger tsunami they heat the atmosphere geologists have determined it to be so 11 / 20 A ____ often forms a mountain when layers of lava and volcanic ash erupt and build up. caldera dike batholith volcano 12 / 20 Which classification system is used to rate hurricane severity? Saffir-Simpson scale Enhanced Fujita scale Richter scale Modified Mercalli scale 13 / 20 what are the 3 types of volcano? extinct volcano dormant volcano active volcano living volcano 14 / 20 Scientists monitor volcano changes and use sensors to measure the concentration of volcanic gases such as sulfur dioxide to ......................... Know if the volcano becomes an extinct one Collect these gases and use them in laboratories Predict if the volcano will erupt soon Study the structure of Earth 15 / 20 Why does magma tend to rise to the surface? It contains very little silica. It is denser than the surrounding material. It is less dense than the surrounding material. It has large amounts of silica. 16 / 20 How many volcanoes erupt each year, on average more than 100 less than 5 around 20 around 60 17 / 20 This image shows the plate boundaries in bold black lines and the ring of fire in red. What is the relationship between the boundaries and the most common area of active volcanoes? Most volcanic zones on Earth are in areas of colder climates Most volcanic zones on Earth are near the southern part of the world Most volcanic zones on Earth are focused on the antarctic place Most volcanic zones on Earth are near plate boundaries 18 / 20 If a geologist detects many small earthquakes near an active volcano, what does this mean? The volcano may be about to erupt The volcano is no dormant The volcano is going to collapse The volcano is blocking plate movement 19 / 20 What is one hazard that can be cause by a volcanic eruption? blizzards tornadoes air pollution weathering of rocks 20 / 20 Which statement accurately describes a pyroclastic flow? Pyroclastic flows move very quickly but are relatively cool. Pyroclastic flows move very slowly, and are rarely deadly. Pyroclastic flows move at speeds of more than 100 km/hr and have temperatures over 1,000°C. Pyroclastic flows occur when the snow and ice of the summit are melted and mix with the ash and mud on the mountain. Your score is 0% Restart quiz Go to the Quizzes Page