ورقة عمل Volcano Risks العلوم المتكاملة الصف السابع
ورقة عمل Volcano Risks العلوم المتكاملة الصف السابع
Lesson Check: Volcano Risks
1) Locations where volcanoes form far from plate boundaries are called .
2) Today, people are never killed by volcanic eruptions.
True
False
3) Which of the following is NOT studied by geologists to predict volcanic eruptions?
A) ground deformation
B) earthquake swarms
C) change in shape of the volcano
D) animal behavior
4) Which statement accurately describes a pyroclastic flow?
A) Pyroclastic flows move at speeds of more than 100 km/hr and have temperatures over 1,000°C.
B) Pyroclastic flows occur when the snow and ice of the summit are melted and mix with the ash and mud on the mountain.
C) Pyroclastic flows move very slowly, and are rarely deadly.
D) Pyroclastic flows move very quickly but are relatively cool.
5) How many volcanoes erupt each year, on average.
A) less than 5
B) around 20
C) around 60
D) more than 100
6) The Hawaiian Islands are examples of volcanoes that are associated with a _______.
A) convergent plate boundary
B) divergent plate boundary
C) transform plate boundary
D) hot spot
7) A ____ often forms a mountain when layers of lava and volcanic ash erupt and build up.
A) caldera
B) volcano
C) dike
D) batholith
8) Ash, lava, and………………….. erupt from the crater of a volcano.
9) If lava from volcanoes moves slowly enough that people can get away from it, why are volcanoes dangerous?
10) Mount St. Helens is a volcano in the state of Washington. One way scientists monitor volcanoes is by using a tool, called a seismometer, on the volcano that measures the strength of earthquakes. In addition, visual observations are frequently made of Mount St. Helens. The table lists data about Mount St. Helens recorded over several months in 1980.
Explain why this type of data can be used by scientists to predict volcanic eruptions.
11) Students conducted research on volcanoes to learn about typical signs of potential volcanic eruptions. Based on their research, they created the data table below. Then they asked some of their classmates to use this information to predict which volcano listed in the table is most likely to erupt next.
Their classmates make the following predictions:
Caeley predicts Volcano 1 will erupt next.
Justine predicts Volcano 2 will erupt next.
Renée predicts Volcano 3 will erupt next.
Angela predicts Volcano 4 will erupt next.
Whose prediction is supported by the data?
A) Caeley’s, because Volcano 1 has the most intense seismic activity.
B) Justine’s, because Volcano 2 has more than one piece of evidence of change in activity.
C) Renee’s, because Volcano 3 erupted most recently.
D) Angela’s, because Volcano 4 shows the fewest signs of normal volcanic activity.
