Urchins and Ocean Acidification

The process of keeping a stable environment is called

• ocean acidification

• homeostasis

• stabilifying

• Trophic Pyramid

Tags

NGSS.HS-LS1-3

A(n) ______ is a substance with a pH less than 7

• Acid
• Alkaline
• Base
• Buffer

An urchin's test is made of

• Carbon Dioxide

• Carbonic Acid

• Calcium Permanganate

• Calcium Carbonate

How does acid affect urchin larvae?

• It melts them

• It stunts their growth

• It causes them to grow tougher shells

• It makes them grow into adults prematurely

Ocean acidification begins with 

• pollution from ships
• carbon dioxide released from burning fossil fuels

• dumping of waste from cities into the ocean

Tags

NGSS.HS-ESS2-6

NGSS.HS-ESS3-5

Carbon dioxide and seawater combine to form

• calcium carbonate
• carbon monoxide
• carbonic acid 

Tags

NGSS.HS-PS1-4

The H+ ion is a(n)

• acid
• base
• neutral

How do the particles move in diffusion?

• From a region of low concentration to a region of high concentration

• From a region of high concentration to a region of low concentration

• From a region of low concentration to a region of low concentration

• From a region of high concentration to a region of high concentration

How long does diffusion last?

• Until the concentration of particles in the system is equal

• Until the regions have switch concentrations

• Until the particles disappear from the system

What happens to the coffee particles when coffee is added to hot water?

• They sink to the bottom of the cup and stay there

• They spread out

• They clump together

Tags

NGSS.MS-PS1-4