4.7.2 Temperature, Depth & Pressure & SALINITY (SOL 4.7)

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment. It changes in response to the independent variable.

Front

What happens to water temperature as you go deeper into the ocean?

Back

As you go deeper into the ocean, the water temperature decreases.

Front

What is salinity?

Back

Salinity is the measure of how much salt is dissolved in water.

Front

How does salt get into the ocean?

Back

Salt enters the ocean from rain that runs off rocks and land into rivers, which then flow into the ocean.

Front

What are the two main factors that affect salinity?

Back

Salinity is affected by evaporation and runoff.

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or controlled in an experiment to test its effects on the dependent variable.

Front

Why does warmer salt water evaporate faster than cooler salt water?

Back

Warmer water has more energy, which allows water molecules to escape into the air more quickly.

Front

What is the relationship between temperature and evaporation?

Back

Higher temperatures increase the rate of evaporation.

Front

What is the effect of depth on ocean pressure?

Back

As depth increases in the ocean, the pressure also increases.

Front

What is the effect of salinity on water density?

Back

Higher salinity increases the density of water.