Semester 2 - Unit 1 Study Guide

Earth's atmosphere contains the most of _____.

• Oxygen

• Nitrogen

• Carbon Dioxide

• Methane

What percentage of earth's atmosphere is nitrogen?

• 100%

• 78%

• 22%

• 0%

The _____ is the least dense layer in the atmosphere.

• Exosphere

• Stratosphere

• Troposphere

• Mesosphere

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NGSS.MS-ESS2-6

This layer in the atmosphere has the most air pressure.

• Exosphere

• Stratosphere

• Troposphere

• Mesosphere

Heating by Radiation

• Air molecules touch the warm ground, heating them up.

• Warm air rises and takes heat with it; eventually it cools and sinks.

• Sunlight travels through space without the aid of fluids or solids.

• Air at the equator rises and sinks at the poles.

Tags

NGSS.MS-ESS2-6

Heating by Conduction

• Air molecules touch the warm ground, heating them up.

• Warm air rises and takes heat with it; eventually it cools and sinks.

• Sunlight travels through space without the aid of fluids or solids.

• Air at the equator rises and sinks at the poles.

Tags

NGSS.MS-ESS2-6

NGSS.MS-PS1-4

Heating by Convection

• Air molecules touch the warm ground, heating them up.

• Warm air rises and takes heat with it; eventually it cools and sinks.

• Sunlight travels through space without the aid of fluids or solids.

• Land and ocean absorb and re-emit heat from the sun.

Tags

NGSS.MS-ESS2-6

Which direction does air flow?

• from warm temperatures to cold temperatures

• from areas of high pressure to areas of low pressure

• from east to west

• from high elevations to low elevations

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which statement best describes the relationship between changes in air pressure and wind speeds?

• When a high- and a low-pressure air mass are far apart, air moves quickly from low to high pressure.

• When a high- and a low-pressure air mass are far apart, air moves slowly from high to low pressure.

• When a high- and a low-pressure air mass are close together, air moves slowly from high to low pressure.

• When a high- and a low-pressure air mass are far apart, air moves quickly from high to low pressure.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which is true about temperature, humidity, and pressure in an air mass?

• Temperature and humidity vary, but pressure does not.

• Temperature, humidity, and pressure are basically the same all through an air mass.

• Temperature at the border of an air mass is always higher than in the middle.

• Humidity makes the pressure in an air mass increase.

Tags

NGSS.MS-ESS2-5