Aquatics Science Final Practice

Front

What theory explains the presence of identical fossils on different continents?

Back

Continental drift is the theory that explains how continents have moved over geological time, leading to the presence of identical fossils on different continents.

Front

What type of pollution can alter organisms' genetic makeup through exposure?

Back

Radioactive pollution has the potential to alter organisms' genetic makeup due to the harmful effects of radiation.

Front

Where are divergent plate boundaries most commonly found?

Back

Divergent plate boundaries are most commonly found on the ocean floor, where tectonic plates move apart.

Front

What happens to pressure as ocean depth increases?

Back

Pressure increases proportionally as ocean depth increases due to the weight of the water above.

Front

Which layer of Earth is the most dense and solid?

Back

The Core is the most dense and solid layer of Earth, composed mainly of iron and nickel.

Front

What is the process by which tectonic plates move apart?

Back

The process is called seafloor spreading, which occurs at divergent boundaries.

Front

What is the main cause of ocean currents?

Back

Ocean currents are primarily caused by wind, the Earth's rotation, and differences in water density.

Front

What is the significance of the thermocline in ocean water?

Back

The thermocline is a layer in the ocean where temperature changes rapidly with depth, affecting marine life and water circulation.

Front

What is the role of phytoplankton in aquatic ecosystems?

Back

Phytoplankton are crucial as they produce oxygen and serve as the base of the aquatic food web.

Front

What is the difference between point source and non-point source pollution?

Back

Point source pollution comes from a single, identifiable source, while non-point source pollution comes from multiple, diffuse sources.