earth science

• It is the breakdown of rock materials at and near Earth surface. - weathering
• erosion - It is the movement of weathered rock by natural forces.
• chemical weathering - It is the breakdown of rocks into pieces with change in its composition.
• Primordial heat - This refers to the heat from the formation of earth
• Radiogenic heat - What heat is produced by the radioactive elements?
• Core - Which of the following is the hottest layer of earth
• 13,871 degrees celsius - The premordial heat of Earth is about.
• Magma. What time should be used to describe a semi-liquid hot molten rock located beneath the earth?
• Lava. What do you call the semi-liquid hot molten rocks found on the surface of earth Once the volcano erupts
• Magmatism is a it is a process under the Earth's crust, where formation and movement of magma occurs.
• Asthenosphere. Where does the formation of magma Take place.
• Metamorphism. it is the change of structural texture or composition of rocks subjected to condition that are different from those in which it is formed.
• Contact - Which of the following type of metamorphism when rock minerals and texture is changed mainly by heat due to contact with magma?
• Regional - which of the following type of metamorphism when rock mineral and texture is changed by heat and pressure over a wide area or region?
• Increases - What will happen to the temperature of rocks during partial melting?
• Amino acid dating. What do geologists use to figure out if a rock is older or younger than other rock?
• Igneous, sedimentary, and metamorphic. - What are the three types of rock?
• Weathering, erosion, compaction. - What step in the rock cycle would be required to change an igneous rock into sedimentary rock?
• Depends on the traces of radioactive isotopes found in fossils. - Which is true about absolute dating?
• Fossils index - Which shows the approximate age of rock
• Two continental plates collided - The diagram shows a land form on Earth. How did the movements of Earths plate from the landform?
• What feature of sea floor is the described as the deepest area of ocean, where subduction takes place. - trench
• What comprises the Mid Ocean Ridge? - mountains
• Which is not involved in the process of sea floor spreading. - It tends to happen near the edges of continents.
• As a student, how can you create a representation of ocean basin? - Digging a part of Lithosphere. / Molding clay into basin.
• What materials are used to have ocean basin? - Soil rocks and mud, water rocks and stick.
• Which of the following structures of ocean basin is partly shallow? - Continental shelf.
• Why is it important to study index fossil? - Because they are abundant and widespread during a short period of geologic time. / Significant aids to determine the correlation and age of rock sequence.
• Index fossils are defined as - Remnants of living things.
• Why are index for sales important for Paleontologist? - A significant age to determine the correlation in age of rock sequence / it tells the relative ages of rock.
• The process in which a living organism become a fossil is called - Fossilization
• This index fossils are formed by preservation and the remains of a specific species are found in the strata of. - sedimentary rock
• The geologic time scale is a system used by scientists to: - Describe the timing and relationship between events that have occurred during Earth history.
• The largest division of geologic time scale is - eon
• The pre Cambrian time covers about 88% of history.