Why the Sea Is Salty

Why is the water on the sea salty?

• The rocks on rivers are salty. Then they flow into the ocean and the water in the ocean becomes even saltier.

• From the salty leaves that fall in the river

• From all the salty animals that live in the ocean

• From the salty rain that falls in the ocean

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Salinity is

• The salt content of a substance

• The Pepper content of a substance

• The circulation of hot and cold matter

• the weather pattern of a region

We cannot drink water from sea/ocean because it is?

• bitter

• salty

• creepy

• tangy

The dead sea has ___________________ water

• salty

• hot

• cold

• sweet

Where does the salt in the ocean come from? There are TWO correct answers.

• Magma from seafloor spreading

• Sediments from weathering and erosion

• Humans add it

• Animals add it

What is the primary reason the sea is salty?

• Evaporation of water leaving salts behind

• Direct addition of salt by marine animals

• Salt production by underwater volcanoes

• Salt is added by human activities

Which process contributes to the salinity of the ocean?

• Photosynthesis

• Weathering of rocks

• Magnetic field interaction

• Tidal waves

How does rainwater contribute to ocean salinity?

• By dissolving atmospheric gases

• By eroding rocks and carrying minerals to the sea

• By increasing the temperature of the ocean

• By diluting the salt concentration

What role do rivers play in the salinity of the sea?

• They dilute the salt concentration

• They carry dissolved salts from land to sea

• They block the flow of saltwater

• They increase the sea's temperature

Which of the following is a major source of the ocean's salt?

• Volcanic eruptions

• River runoff

• Marine life

• Human activities