Exploring the Oceans Test

The world's smallest ocean is the ___.

• Indian Ocean
• Arctic Ocean
• Atlantic Ocean
• Pacific Ocean

The physical change of liquid water to water vapor is called ___.

• desalination
• evaporation
• condensation
• precipitation

The ocean's surface temperature varies with latitude and ___.

• longitude
• salinity
• time of year
• sodium chlorine

The most abundant dissolved salt in ocean water is ___.

• sodium saline
• sodium flouride
• sodium chlorine
• sodium chloride

Which statement is true about Earth's oceans?

• They are all getting larger.
• They have changed over time.
• They have not changed in 4 million years.
• They are all getting smaller.

Which of the following could become a volcanic island?

• a tectonic plate
• a seamount
• an ocean trench
• a rift valley

What technologies do scientists use to study the ocean floor?

• scuba divers and sonar
• sonar and echo-ranging
• satellite and Geostat
• sonar and satellite

The two major regions of the ocean floor are the continental margin and the ___.

• benthic environment
• deep ocean basin
• midocean ridges
• rift valleys

An ocean trench ___.

• is a valley formed in a rift zone
• is a submerged mountain
• runs parallel to a chain of volcanic islands
• is at least 1,000m deep

Crabs, seaweed, and clams are all ___.

• benthos
• zooplankton
• phytoplankton
• nekton