Aquatic Science Mid Term 2024

Front

What is surface tension?

Back

Surface tension is the tightness across the surface of water that allows objects, like paper clips, to float. It is caused by the cohesive forces between liquid molecules.

Front

What percentage of Earth's water is salt water?

Back

97% of Earth's water is salt water.

Front

Why does ice float on liquid water?

Back

Ice floats on liquid water because it is less dense than liquid water.

Front

What was the name of the ancient supercontinent formed 28 million years ago?

Back

The ancient supercontinent formed 28 million years ago is called Pangea.

Front

What contributed to the deadliness of the Galveston Storm of 1900?

Back

The deadliness of the Galveston Storm of 1900 was due to several factors, including Galveston Island's elevation being mostly at sea level, conflicting weather reports, and the replacement of Cuban meteorologists by American meteorologists.

Front

Define adhesion in the context of water.

Back

Adhesion is the attraction between water molecules and other substances, which allows water to stick to surfaces.

Front

What is capillary action?

Back

Capillary action is the ability of water to flow in narrow spaces without the assistance of external forces, often seen in plants as water moves from roots to leaves.

Front

Explain the concept of polarity in water molecules.

Back

Polarity in water molecules refers to the distribution of electrical charge, where oxygen is slightly negative and hydrogen is slightly positive, leading to hydrogen bonding.

Front

What is the significance of the water cycle?

Back

The water cycle is significant as it describes the continuous movement of water on, above, and below the surface of the Earth, supporting ecosystems and weather patterns.

Front

What is the role of phytoplankton in aquatic ecosystems?

Back

Phytoplankton are crucial in aquatic ecosystems as they are primary producers, converting sunlight into energy through photosynthesis and forming the base of the food web.