6.3 - Coral Reef Dynamics

Select the letter that identifies the Reef Front or slope

• A

• B

• C

• D

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-5

Select the letter that identifies the Reef Crest

• A

• B

• C

• D

Tags

NGSS.MS-LS2-3

Constructive forces on a coral reef include

• Coral growth (secreting Calcium Carbonate)

• Parrotfish Grazing

• Boring clams and sponges

• Ocean acidification

Tags

NGSS.HS-LS2-5

This picture shows a parrotfish biting a portion of coral to get the zooxanthellae. This is a form of

• weathering

• Bioerosion

• Mechanical Erosion

• Deposition

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Overall reef erosion occurs when

• The rate of growth is more than the rate of erosion of coral skeletons

• The rate of growth is less than the rate of erosion of coral skeletons

• The rate of growth is equal to the rate of erosion of coral skeletons

Tags

NGSS.MS-LS1-5

Based on the graph provided, What occurs to the coral growth rate as acidity increases?

• Growth rate increases

• Growth rate decreases

• Growth rate remains the same

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What does increased carbon dioxide levels in the atmosphere have on the chemistry of the ocean?

• Increases dissolved oxygen

• Decreases pH

• Decreases Salinity

• Decreases temperature

Tags

NGSS.MS-LS2-4

Which of the following situations might cause coral bleaching

• above normal temperatures

• below normal temperatures

• elevated Carbon dioxide levels

• decreased carbon dioxide levels

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-4

Coral bleaching occurs when

• calcium carbonate is secreted

• bleach is used to whiten corals

• zooxanthellae are expelled from the coral

• coral is exposed to the atmosphere

Tags

NGSS.MS-LS2-4

Human caused threats to coral reefs include

• boat collisions

• fishing practices that remove large numbers of grazing species

• nutrient rich run-off from coastal communities

• all of the above

Tags

NGSS.MS-LS2-5