NC Science

Which is Earth’s largest source of drinkable water?

• lakes

• rivers

• oceans

• aquifers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

What most often causes the availability of water to change?

• local geography

• types of plants

• types of soil

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

If water is recycled in the atmosphere, which best describes why water availability on Earth is decreasing?

• An increase in droughts is slowly reducing freshwater reservoirs.

• Due to an increase in Earth’s temperature, evaporation rates continue to increase reducing liquid water on the surface.

• Earth’s freshwater continues to become more polluted, reducing the supply of freshwater safe for humans to consume.

Tags

NGSS.MS-ESS3-4

Where does most fresh water exist?

• ice caps, lakes, and streams

• glaciers, rivers, and oceans

• aquifers, ice caps, and glaciers

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

The water within an estuary can be best described as

• salty

• fresh

• a mix of salty and fresh water

Tags

NGSS.MS-ESS2-4

Why is water from an aquifer more likely to be cleaner than water from other sources?

• because it forms where fresh and salt water meet

• because it receives water directly from precipitation

• because it rises to the surface near the ocean

• because pollutants are filtered by rock and soil deep within Earth

Which are found in mountain streams where the slope is steep and the channel is rough, irregular, and full of large boulders?

• lakes

• rapids

• estuaries

Tags

NGSS.MS-ESS2-4

Which is the most abundant freshwater resource in North Carolina?

• estuaries

• icebergs

• oceans

• rivers

Two different liquids are poured together in an open container. Bubbles begin to form. After the bubbling stops, it is determined that the total weight of the two liquids is less than before they were poured together. Which best describes this observation?

• Some of the atoms during the reaction escaped into the air.

• Some of the atoms during the reaction were destroyed.

• Some of the atoms during the reaction became heavier.

• Some of the atoms during the reaction changed to a different kind of atom.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How does this reaction support the Law of Conservation of Mass?

• Several molecules of water are produced.

• The mass of carbon atoms is reduced during the reaction.

• The mass of the atoms in the reactant equals the mass of the atoms in the products.

• The mass of hydrogen atoms is the only thing that remains the same before and after the reaction.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5