Dissolved Oxygen quiz

What is eutrophication?

• algae blooms
• excess nutrients
• less dissolved oxygen
• more dissolved oxygen

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

The higher the temperature, the more dissolved oxygen in water.

• True
• False

Tags

NGSS.MS-PS3-4

How do we measure Dissolved Oxygen (D.O.)?

• ppg
• pmp
• mpp
• ppm

How does an algae bloom start?

• it gets a green light
• extra nutrients in the water
• extra DO in the water
• fish create it

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

How does photosynthesis by aquatic plants impact dissolved oxygen levels in the water?

• the plants bring in dissolved oxygen with photosynthesis and reduce DO levels
• the plants give off dissolved oxygen with photosynthesis and increase DO levels
• the plants photosynthesis does not affect DO levels
• photosynthesis increases the temperatures with decrease DO levels

Tags

NGSS.MS-LS2-3

NGSS.MS-LS1-6

How can DO (dissolved oxygen) levels be increased? Make sure all parts of your answer choice are correct.

• wind, cold water, plants doing photosynthesis
• cold water, respiration, food
• humans pumping chemicals, extra nutrients, plants
• warm water, fish, people

How can DO (dissolved oxygen) levels decrease? Make sure all parts of your answer choice are correct.

• warm water, aquatic animals respiring, bacteria using DO to decompose (break down) dead organisms
• cold water, water plants photosynthesizing, fish respiring
• cold temperatures, fish dying, plants photosynthesizing
• fish dying, bacteria breaking down dead organisms, waves, wind

Tags

NGSS.MS-LS2-4

How can oxygen be removed from the water?

• Aquatic animals breathing during the day and night
• Bacteria decomposing dead plants and animals and using dissolved   oxygen to do this
• When temperature increases 
• All of the above

How does the atmosphere impact dissolved oxygen?

• Atmospheric pressure takes out DO from the water
• The atmosphere does not impact DO
• Atmospheric pressure pushes DO into the water (through diffusion)
• All of the other options are correct

How do bacteria affect DO in water bodies?

• increase DO through decomposition
• decrease DO through decomposition
• DO stays the same
• bacteria multiply DO by 8

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4