Oceanography Unit 1 Vocabulary

What is a Secchi disk?

• A black and white disk that is lowered into the water to estimate the transparency of seawater.

• A device used to measure the salinity of water.

• A type of fishing net used to catch large fish.

• An instrument used to measure the temperature of water.

What is the function of a Tucker Trawl Net?

• Collect water samples at different depths.

• Measure the transparency of the water.

• It opens and closes at specific depths to ensure that what is captured is only from that depth.

• Take sediment samples from the ocean floor.

What is a Niskin bottle?

• A device used to measure water transparency.

• A bottle designed to collect water samples at specific depths.

• A type of fishing net used to catch large fish.

• An instrument used to measure water temperature.

What is the purpose of a hydrophone?

• To measure the transparency of water.

• To collect water samples at different depths.

• A microphone for acoustic measurements in fluids.

• To take sediment samples from the ocean floor.

What is a bottom sampler?

• A device used to measure water transparency.

• A clam-shell type device used to collect sediment samples from the ocean floor.

• A type of fishing net used to catch large fish.

• An instrument used to measure water temperature.

What is a dredge used for?

• Measuring the depth of the ocean

• Catching organisms living on the ocean floor

• Determining the distance from the equator

• Mapping the rocks beneath the ocean floor

What does latitude measure?

• The distance of a place east or west of the Prime Meridian.

• The depth of a body of water.

• The distance of a place north or south of the Earth's equator.

• The height of the sea surface.

What does longitude measure?

• The distance of a place north or south of the Earth's equator

• The distance of a place east or west of the Prime Meridian

• The depth of the ocean floor

• The height of the sea surface

What is the function of a side-scan sonar?

• Measuring the height of the sea surface

• Scanning the ocean floor to the side of a ship's path

• Determining the depth of a body of water

• Mapping the rocks beneath the ocean floor

What does an echosounder do?

• Uses a row of sound waves to collect data on a wide swath of the sea floor

• Uses a single stream of sound waves to determine the depth of a body of water

• Measures the height of the sea surface

• Maps the rocks beneath the ocean floor

Tags

NGSS.MS-PS4-2