Arthropods and Geological Time Periods

These flashcards encompass various key terms related to arthropods, geological time periods, and important features in geology and paleontology.

Arthropods

A diverse family that includes organisms like lobsters, crabs, millipedes, and spiders, named for their jointed legs.

Eukaryote

An organism composed of cells having a well-defined nucleus and organelles.

Homo Erectus

One of the first species of genus Homo, replaced by Homo Neanderthals.

Angiosperm

Flowering or seed-enclosed plants that originated during the Cretaceous Period.

Chicxulub

Crater left by a meteorite that struck Earth 65 million years ago, named after a nearby Mayan town.

Gymnosperm

A naked-seed plant including ginkos and conifers, which appeared during the Devonian Period.

Ordovician

One of the periods from the Paleozoic Era.

Deflation

Wind erosion in which loose particles of sand and dust are removed by the wind, leaving coarser particles behind.

Photovoltaic cells

Devices that convert solar energy directly into electricity.

Rainshadow Desert

A desert formed when a mountain range creates a barrier to moist air, leading to low precipitation on the downwind side.

Anthropogenic Greenhouse Effect

The portion of the greenhouse effect that results from human activities.

Paleosol

Woody organic matter from ancient soils.

Trilobite

Hard-shelled organisms from the Cambrian period; extinct by the Paleozoic period.

Biomass Energy

Energy derived from plant life.

Cenozoic

The first era in the geological time scale following the Mesozoic Era.

Striation

Long parallel scratches formed when glacial sliding occurs.

Lateral Moraine

Pile of debris transported by a glacier that forms along the edges.

Kettle

Depressions left by melting glaciers that form ponds and lakes.

Ventifact

A bedrock surface or stone abraded and shaped by windblown sediment, indicating the direction of past winds.