Test Review: Ecocolumns

Front

What is dissolved oxygen?

Back

Dissolved oxygen is the amount of oxygen present in water, measured in parts per million (ppm). It is essential for the survival of aquatic organisms.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

How does temperature affect dissolved oxygen levels in water?

Back

COLDER WATER can hold more dissolved oxygen because the H2O molecules move slower, allowing more oxygen to remain in the water.

Front

What happens to aquatic organisms when dissolved oxygen levels drop below 4 mg/L?

Back

Sensitive organisms, such as fish, can become stressed when dissolved oxygen levels drop below 4 mg/L.

Tags

NGSS.MS-LS2-4

Front

Why are aquatic plants important in an aquatic chamber?

Back

Aquatic plants provide a food source for fish, produce oxygen through photosynthesis, and support good bacteria that convert nitrites to nitrates.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Front

What does the top chamber of an ecocolumn represent in nature?

Back

The top chamber represents the ground/top soil of Earth.

Front

What is the relationship between photosynthesis and dissolved oxygen?

Back

Photosynthesis in aquatic plants produces oxygen, which increases the levels of dissolved oxygen in the water.

Tags

NGSS.MS-LS1-6

Front

What is the role of good bacteria in an aquatic ecosystem?

Back

Good bacteria help convert harmful nitrites into nitrates, which are less toxic and can be used by plants.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Front

What is eutrophication?

Back

Eutrophication is the process by which water bodies become overly enriched with nutrients, leading to excessive growth of algae and depletion of oxygen.

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Front

What is the significance of measuring pH in an aquatic ecosystem?

Back

pH measures the acidity or alkalinity of water, which affects the health of aquatic organisms and the overall ecosystem.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Front

How do aquatic plants contribute to the water cycle?

Back

Aquatic plants help with condensation and transpiration, playing a role in the water cycle.

Tags

NGSS.MS-ESS2-4