_____ is the most abundant gas in the atmosphere.

• nitrogen

• oxygen

• carbon dioxide

• ozone

____ forms when lightning interacts with oxygen in the air.

• Water vapor

• Smog

• Ozone

• Pollution

Tags

NGSS.MS-PS1-2

The ____ layer protects Earth from getting hit by most meteoroids.

• Troposphere

• Stratosphere

• Thermosphere

• Mesosphere

As altitude above Earth increases, air pressure ___.

• stays the same

• increases

• decreases

Tags

NGSS.MS-ESS2-6

The main layers of the atmosphere are classified according to changes in ____ and _____.

• precipitation

• altitude

• temperature

• clouds

Air pressure is measured by an instrument called a/an ____.

• barometer

• altimeter

• speedometer

• thermometer

The ____ helps protect Earth from too much ultraviolet (UV) radiation because it contains ozone.

• mesosphere

• thermosphere

• stratosphere

• troposphere

Global and local winds are different except they ____.

• both are created by unequal heating

• both blow over short distances

• both occur over large areas

• both are called breezes

Tags

NGSS.MS-ESS2-6

Trade Winds and Prevailing Westerlies differ in the ____.

• direction that they flow

• type of winds (one is steady, one is cold)

• time of year they blow

Tags

NGSS.MS-ESS2-6

In 1970, the US government set air quality standards called the

• Breath Easy Act

• Clean Air Act