earth sci

Conduction in mantle happens when heat is transferred from hotter molten rocks to the Earth’s cold crust. What process is being described?

• decompression melting

• flux melting

• heat transfer

• partial melting

All continents were once joined together forming a supercontinent called _________.

• Panthalassa

• Laurasia

• Gondwanaland

• Pangaea

What is the originally deposited horizontal layers that folded or tilted and then eroded?

• Angular unconformity

• Disconformity

• Nonconformity

• Paraconformity

What two specific continents fit together most noticeably?

• Africa and North America

• South America and Europe

• South America and Africa

• Antarctica and Africa

Kapurpurawan rock formation found in Ilocos Norte is a famous tourist attraction formed when seawater seeps into these cracks and freezes due to the lower temperatures in the area. What type of weathering is involved?

• Salt Crystal Growth

• Frost Wedging

• Hydrolysis

• Oxidation

A simple fold of bend was formed on a rock layer after a compressive stress was exerted on it. What type of fold was formed?

• Anticline

• Monocline

• Syncline

• Incline

When is the time where proliferation of life occurred, and rocks became less metamorphosed?

• Archaean eon

• Proterozoic eon

• Phanerozoic eon

• Paleozoic era

Mountains are result of high-impact stress caused when two plates collided. What kind of stress caused it to form?

• compressional

• shear

• confining

• tensional

Which among the following is NOT a source of Earth’s internal heat?

• Primordial heat from Earth’s early stages

• Decay of radioactive elements

• Decay of biological materials

• Gravitational pressure

If there are more mid-ocean ridges than subduction zones, what happens to the ocean?

• It gets larger

• It gets smaller

• It sinks

• It will not change