Intertidal Zone Guided Notes

Multiple Choice

Which body has the greater effect on Earth's tides?

• Sun
• Saturn
• Moon 
• Venus

Multiple Choice

Tides are caused by

• strong winds that blow over ocean waters.
• the interaction of Earth, the moon and the sun.
• the shifting of the plates on the ocean floor.
• variations in the salinity of ocean water

Labelling

Label the zones

Drag labels to their correct position on the image

upper intertidal

splash zone

lower intertidal

mid intertidal

Multiple Choice

The two different states of the Intertidal Zone include:

• Low tide and the splash zone

• Low tide and medium tide

• Low tide and high tide

• High tide and the splash zone

Multiple Choice

Only exposed during low tide; contains the highest biodiversity

• Upper intertidal

• Mid intertidal

• Low intertidal

• Splash zone

Multiple Choice

Only submerged at high tide; hotter and drier

• Upper intertidal

• Mid intertidal

• Low intertidal

Multiple Choice

Submerged and exposed for equal amounts of time

• Upper intertidal

• Mid intertidal

• Low intertidal

• Splash zone

Multiple Choice

Ecosystem found on marine shorelines alternating between high and low tide

• Abyssal Zone

• Coral Reef

• Intertidal Zone

• Open Ocean

Multiple Choice

The Splash Zone can be described as

• Lies between medium and low tide

• Lies between high and low tide

• Area above the high tide zone in which animals survive by getting splashed by the waves.

• Never receives water

Multiple Choice

Which of the following is an adaptation that would help prevent desiccation in intertidal zone organisms?

• Skin with a large surface area

• “Clamming up” or closing off shells

• Crawling up out of the substrate when waves go out

• Byssal threads to attach to rocks

Multiple Choice

Which of the following is an adaptation used by some gastropods to close off their shell like a door?

• pneumatocysts

• byssal threads

• operculum

• bioturbators

Multiple Choice

Which of the following is the MOST common challenge for organisms living in the intertidal zone to adapt to?

• Extreme temperature & salinity changes

• High primary productivity

• High level of nutrients

• Moving substrate

Multiple Choice

Holes, cracks, or crevices where seawater collects as the tide goes out.

• tide pools

• tide zones

• tidal waves

• tidal shore