NC 7th Grade Science NCFE

Which layer of the atmosphere contains the most water vapor?

• troposphere

• stratosphere

• mesosphere

• exosphere

Tags

NGSS.MS-ESS2-4

Which is the most likely cause of tropical storms?

• Water runoff from the land fuels storm clouds

• High-pressure air causes storm clouds to form

• Sea breezes close to shore push storm clouds together

• Warm water evaporates, rises quickly, and interacts with a colder air mass

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Over a period of several hours, a barometer shows rapidly decreasing air pressure. What type of weather will most likely occur next?

• clear, sunny weather

• rainy weather for days

• cloudy, stormy weather

• calm, windless weather

Tags

NGSS.MS-ESS2-5

What causes convection currents to occur on Earth?

• cool air rising, warm air sinking

• cool air rising, warm air rising

• warm air rising, cool air sinking

• warm air sinking, cool air sinking

Tags

NGSS.MS-ESS2-6

Why are scientists concerned with ozone depletion in the upper atmosphere?

• because it causes greater levels of ground-level ozone

• because it allows ultraviolet radiation to reach Earth’s surface

• because it increases the amount of smog in highly populated cities

• because it decreases global temperatures by decreasing incoming solar radiation

Tags

NGSS.HS-ESS2-4

NGSS.HS-PS4-3

NGSS.HS-PS4-4

How does the arrangement of the air molecules found in the troposphere compare to the arrangement of those found in the thermosphere?

• The air molecules are closer together in the troposphere and are farther apart in the thermosphere.

• The air molecules are farther apart in the troposphere and are closer together in the thermosphere.

• The number of air molecules is the same in the troposphere as in the thermosphere.

• There are fewer air molecules in the troposphere than in the thermosphere.

Why do thunderstorms most often occur in the summer months?

• The air pressure is higher in the summer months.

• Increases in sunlight cause air molecules to contract.

• The jet stream forces air upward during the summer months.

• Higher temperatures increase the rate of evaporation and convection.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What type of weather is most likely observed in an area when cirrus clouds are present?

• rainy weather

• calm weather

• foggy weather

• stormy weather

Tags

NGSS.MS-ESS2-5

Earth’s atmosphere is mainly composed of which gases?

• hydrogen, helium, oxygen, and argon

• nitrogen, oxygen, argon, and carbon dioxide

• nitrogen, hydrogen, argon, and carbon dioxide

• helium, hydrogen, oxygen, and carbon dioxide

In which way are a euglena and a volvox different?

• A euglena is an individual cell, while a volvox is a colony of cells.

• A euglena uses cilia to move, while a volvox uses flagella to move.

• A euglena can make its own food, while a volvox must capture its food.

• A euglena only reproduces sexually, while a volvox only reproduces asexually.