Science Review-History of the Earth Online Quiz

Erosion is the geological process in which earth materials are worn away and transported by natural forces such as wind, water, ice, or gravity. In contrast, weathering is the static breaking down of rocks, while oxidation is a specific chemical reaction. Because the question specifies the removal and transport of particles, erosion is the correct term.

Acid rain is a classic example of chemical weathering because it involves a chemical reaction between acidic water and minerals in rocks, causing them to dissolve or alter. Freezing, thawing, and pressure are physical processes that mechanically break rocks apart without changing their chemical composition. Therefore, acid rain is the only chemical process listed.

Freezing and thawing (frost wedging) physically breaks rocks apart without changing their chemical composition, making it a mechanical weathering agent. Carbon dioxide, acid rain, and oxygen cause chemical weathering by reacting with minerals in the rock.

Yellowstone National Park is a continental hotspot volcanic system, not an island arc chain. Island arcs are chains of volcanic islands formed at oceanic-oceanic convergent plate boundaries, such as the Aleutian Islands.

Magma is molten rock located beneath Earth's surface. Once it erupts and reaches the surface, it is called lava.

Tension is the stress force that pulls on the crust, stretching rock so that it becomes thinner in the middle. Compression squeezes rock together, while shearing pushes rock in opposite directions.

Sea-floor spreading occurs at mid-ocean ridges, where divergent tectonic plates pull apart, allowing magma to rise and form new oceanic crust. Deep ocean trenches are where old crust is subducted and destroyed, not where spreading occurs.

Alfred Wegener proposed the continental drift theory, suggesting that all continents were once joined in a single supercontinent called Pangea. The other options are either distractors or humorous classroom-specific references.

The theory of plate tectonics explains the structure of the Earth's lithosphere and the forces, such as convection currents in the mantle, that drive the movement of tectonic plates. Continental drift was the historical predecessor that lacked a mechanism for how the plates moved.

Heating an object adds thermal energy, which increases the kinetic energy of its particles, causing them to move faster. Conversely, cooling an object decreases kinetic energy, causing the particles to move slower.

Heat spontaneously flows from a region of higher temperature (warmer object) to a region of lower temperature (cooler object) until thermal equilibrium is reached. This is a fundamental principle of thermodynamics.

Energy from the sun travels through the vacuum of space to Earth via electromagnetic waves, which is the process of radiation. Conduction and convection both require a physical medium (matter) to transfer heat, which is not present in the vacuum of space.

The lithosphere is the rigid, outermost shell of Earth, consisting of the crust and the solid, uppermost portion of the mantle. The asthenosphere lies directly below the lithosphere and is semi-fluid.

The asthenosphere is the highly viscous, mechanically weak, and ductile region of the upper mantle, lying just below the lithosphere. Therefore, it is located entirely within the mantle.

Counting from the outside of the Earth inward, the layers are the crust (first), mantle (second), outer core (third), and inner core (fourth). The inner core is the solid, extremely hot center of the Earth.

Counting from the outside inward, the third layer of the Earth is the liquid outer core, which lies between the mantle and the solid inner core.

Counting from the outside inward, the second layer of the Earth is the mantle, which makes up the bulk of Earth's volume and lies between the crust and the outer core.

The Earth is divided into several layers based on its composition and physical properties. The outermost layer, which we live on, is the crust. It is the thinnest and first layer of the Earth, followed by the mantle, outer core, and inner core.