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