Volcano Hunters Lesson 2 Quiz

Viscosity refers to.....

• the weight of a fluid material.
• the gas content of a fluid and (the resistance to energy change in particles)
• a measure of the temperature of a fluid.
• a measure of how easily a liquid flows (the resistance to flow of a fluid)

Which list of materials is in order from lowest viscosity to highest viscosity?

• Peanut butter, milk, oilve oil
• Milk, Peanut butter, olive oil
• Peanut butter, olive oil, milk
• Milk, olive oil, peanut butter

Which pair of terms would make the best match to fill the blanks in the following sentence? Gases escape more easily from a ______________ viscosity magma; that is why eruptions are more violent from volcanoes that are supplied by ____________ viscosity magma.

• High, low
• Low, low
• Low, high
• High, high

The explosivity of a volcano is most closely related to what two factors?

• gas content and temperature
• gas content and viscosity
• viscosity and age
• microwaves and earthquakes

Analyze and interpret the patterns in the data and determine which of these volcanoes is likely to be more dangerous, and why.

• Volcano 1- it has low viscosity and gas content, making it highly explosive
• Volcano 1- it has Hawaiian eruptions which are the most dangerous type of eruption
• Volcano 2- It has Vulcanian eruptions which are the only eruptions that can be dangerous
• Volcano 2- it has high viscosity and gas content, making it explosive

What is tephra?

• rock fragments and particles ejected by a volcanic eruption
• a mass of rocks and water pouring into the ocean
• energy created by earthquakes and ground movement

T/F- The high the explosivity of a volcano, the more tephra that is released

• True
• False

If viscosity of magma is increased, the explosivity of a volcano ___________.

• Decreases
• Increases
• Stays the same
• Is unaffected

If gas content of magma is increased, the explosivity of a volcano ___________.

• Decreases
• Increases
• Stays the same
• Is unaffected

Which volcano is most likely to be the most explosive?

• Volcano 6
• Volcano 1
• Volcano 2
• Volcano 3
• Volcano 4