Exam 2023

These two magnets with unlabeled poles are held close together, as shown below. What would the poles need to be to cause the magnets to repel one another?

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Scientists have wondered how oceans basins are created between continents. One theory is that basins can change over time, as represented in the two models below, I: Past and II: Present.Diagram I: Past shows a side-view (cross-section) of the past arrangement of two continents, X and Y.Diagram II: Present shows a side-view (cross section) of the present arrangement of the same two continents. Which arrow would represent the direction the E is moving?

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Could the same tectonic process create the whole Andes mountain range? Choose one of the word choices to complete the descriptions below.The melted material is stored as _________ in the magma chamber beneath the volcano, and later erupts as ________ that helps form stratovolcanoes on the Earth’s surface.

• Magma, magma
• Magma, lava
• Lava. lava
• Lava, magma

What is an eruption?

• a vent or opening on a volcano that releases high temperature steam and gases.
• melted rock that is emitted from a volcano or vent and flows onto the surface; also refers to the hardened rock that forms as it cools.
• the emission of volcanic products such as lava, ash, and gases from a volcano; as a geologic process, volcanic eruptions usually occur as sudden events.
• small solid particles that are emitted from a volcano during an eruption into the atmosphere.

What is a lava?

• a vent or opening on a volcano that releases high temperature steam and gases.
• melted rock that is emitted from a volcano or vent and flows onto the surface; also refers to the hardened rock that forms as it cools.
• the emission of volcanic products such as lava, ash, and gases from a volcano; as a geologic process, volcanic eruptions usually occur as sudden events.
• small solid particles that are emitted from a volcano during an eruption into the atmosphere.

What is a volcanic ash?

• a vent or opening on a volcano that releases high temperature steam and gases.
• melted rock that is emitted from a volcano or vent and flows onto the surface; also refers to the hardened rock that forms as it cools.
• the emission of volcanic products such as lava, ash, and gases from a volcano; as a geologic process, volcanic eruptions usually occur as sudden events.
• small solid particles that are emitted from a volcano during an eruption into the atmosphere.

Which of these is a Caldera?

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Which of these is a fissure vent?

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Which letter represents Earth's crust?

• A
• B
• C and D

Which letter represents the Earth's mantle?

• A
• B
• C and D