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Air pressure changes across the different layers of the atmosphere. Which option sequences the atmosphere's layers in increasing order of atmospheric pressure?

• troposphere, stratosphere, mesosphere, thermosphere, exosphere

• troposphere, stratosphere, thermosphere, mesosphere, exosphere

• exosphere, mesosphere, thermosphere, stratosphere, troposphere

• exosphere, thermosphere, mesosphere, stratosphere, troposphere

What are the two most common gases found throughout the atmospheric layers?

• carbon dioxide and oxygen

• ozone and water vapor

• nitrogen and oxygen

• carbon dioxide and nitrogen

A student stacks five different textbooks to represent a model of the major layers of the atmosphere, as shown.

If the physics textbook represents the lowest layer of the atmosphere, which statement is true?

• The ozone layer is contained in the layer represented by the literature textbook.

• The layer closest to outer space is represented by the mathematics textbook.

• All weather activities occur in the layer represented by the history textbook.

• The warmest layer of the atmosphere is represented by the biology textbook.

Tags

NGSS.MS-ESS2-5

Ice samples from glaciers provide evidence that today's atmosphere contains more carbon dioxide than ancient atmospheres on Earth did. Why is this increase in carbon dioxide a concern to scientists?

• It contributes to the rapid expansion of continental glaciers.

• It contributes to the rapid cooling of the warm ocean currents.

• It contributes to the gradual warming of the atmosphere.

• It contributes to the loss of radiant energy from the Sun.

Tags

NGSS.MS-ESS3-5

Why is deforestation a major problem in terms of its effect on global warming?

• Plants' root systems absorb many toxins from the soil which might contaminate the water supply.

• Plants remove significant amounts of carbon dioxide gas from the atmosphere through the process of photosynthesis.

• Plants remove significant amounts of nitrogen dioxide gas from the atmosphere through the process of denitrification.

• Plants' root systems hold the soil in place, and when they are gone, there is increased pollution from runoff.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

In order to reduce the possible impacts of global warming, scientists state that humans need to produce fewer greenhouse gases. Which statement describes a method that will reduce greenhouse gas output the most?

• Use energy efficient appliances.

• Recycle paper and plastic.

• Burn natural gas instead of coal to produce electricity.

• Use solar and wind power to produce electricity.

Tags

NGSS.HS-ESS3-4

NGSS.HS-LS2-7

What is one example of how humans impact global warming?

• Contour plowing by farmers increases the level of rain water run-off.

• Burning coal and oil increases the level of carbon dioxide in the atmosphere.

• The use of copper wire in power transformers increases the speed of the electrical currents.

• Heat emitted from factories, automobiles, and buildings increases the average global temperature.

Tags

NGSS.MS-ESS3-5

What would most likely happen if all evaporation of water stopped?

• Runoff would increase.

• More clouds would form.

• No precipitation would fall.

• Moist air would be in the atmosphere.

Tags

NGSS.MS-ESS2-4

A student examines the processes of evaporation and condensation in the water cycle by filling a beaker with water and covering the beaker with a glass lid. She positions a lamp so that its light shines on the beaker, as shown in the image.

The student finds that condensation did not significantly collect on the glass lid. What change should the student make in the design process to make her results more accurate?

• Remove the lid and leave the beaker open to the light from lamp.

• Remove the lid and cover the beaker with a dark cloth.

• Turn the lid over and place some ice cubes on it.

• Turn the lid over and pour some warm water on it.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram shows various stages of the water cycle labeled P, Q, R, and S.

Which statement about the stages of the water cycle is correct?

• Stage P is evaporation, which occurs immediately after stage Q, which shows condensation.

• Stage Q is condensation, which occurs immediately after stage P, which shows evaporation.

• Stage R is evaporation, which occurs immediately before stage S, which shows precipitation.

• Stage Q is condensation, which occurs immediately before stage P, which shows precipitation.

Tags

NGSS.MS-ESS2-4