Distribution of Earth's Water Exam

What percentage of Earth's water is not safe to use as drinking water?

• 3%

• 68%

• 87%

• 97%

Tags

NGSS.MS-ESS2-4

Which of the following graphs communicates the specific location of drinkable water resources by percentage?

• Graph A

• Graph B

• Graph C

• Graph D

A group of students built a model of the water cycle inside a fish tank. They added rocks, soil, and small plants around a bowl of water in the center. The students created a stream in their model by cutting a small hole in the top of their aquarium and using a tube to run water over the rocks to their bowl 'lake.' The students set a bowl of ice cubes on the model after two hours. The students observed that the water flowing into the model from the stream was missing. After the first week, they noticed that something did not replace the water they projected should have been lost as evaporation over the week. Which action could help them observe the evaporation of water?

• The students could add a heat lamp to the model to simulate the sun's energy.

• The students could add ice cubes to the lake to change the thermal energy in the model.

• The students could add more plants to the model to increase the transfer of water between the soil and plants.

• The students could add another stream to the model to increase the water in the cycle.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which set of arrows shows the MOST LIKELY movement of water in Jacie's model?

• (Diagram showing arrows: Precipitation → Water in Model → Condensed Water → Precipitation)

• (Diagram showing arrows: Precipitation → Condensed Water → Water in Model → Precipitation)

• (Diagram showing arrows: Condensed Water → Precipitation → Water in Model → Condensed Water)

• (Diagram showing arrows: Precipitation → Water in Model → Precipitation → Condensed Water)

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which model correctly shows the different processes that occur in the water cycle?

• A. [Diagram A]

• B. [Diagram B]

• C. [Diagram C]

• D. [Diagram D]

Tags

NGSS.MS-ESS2-4

Mia tasted ocean water and found it very salty. Which statement best explains the salt in the ocean water?

• A. Rivers bring dissolved salts to the ocean, where it is not evaporated.

• B. Clouds transport salt water over land, where it falls as precipitation.

• C. Energy from the Sun breaks down rocks in the ocean that release salt.

• D. Wind carries eroded salt to the ocean, where it collects into salt formations.

Freshwater is water that contains little or no salt. Which of the following is least likely to be a source of freshwater?

• glaciers

• lakes

• oceans

• rivers

Tags

NGSS.MS-ESS2-4

Which layer of the atmosphere contains the ozone layer?

• the troposphere

• the stratosphere

• the thermosphere

• the mesosphere

Based on the graph, which pair of latitudes have the MOST similar climates?

• A. A and D

• B. A and C

• C. C and D

• D. B and D

Tags

NGSS.MS-ESS2-6

Which statement BEST compares the atmospheric layers closest to and farthest from Earth's surface to the other layers of Earth's atmosphere?

• The pressure is lowest in these layers.

• The temperatures are highest in these layers.

• The temperatures are lowest in these layers.

• The pressure is highest in these layers.