Class 7 Chapter 4 Air:

Troposphere

Stratosphere

Mesosphere

Thermosphere

Burning of fossil fuels

Volcanic eruptions

Dust storms

All of the above

Convectional rainfall

Orographic rainfall

Cyclonic rainfall

Acid rain

The process by which the Earth's atmosphere traps heat

The process by which the Earth's atmosphere reflects heat back into space

The process by which the Earth's atmosphere absorbs heat from the sun

All of the above

Troposphere

Stratosphere

Mesosphere

Thermosphere

To protect us from harmful ultraviolet rays from the sun

To trap heat and keep the Earth warm

To contain most of the Earth's clouds and weather systems

All of the above

Air pressure is the force exerted by the weight of the air, while wind is the movement of air from areas of high pressure to areas of low pressure.

Air pressure is the movement of air from areas of high pressure to areas of low pressure, while wind is the force exerted by the weight of the air.

Air pressure is the temperature of the air, while wind is the movement of the air.

Air pressure is the humidity of the air, while wind is the movement of the air.

A hole in the Earth's ozone layer that allows more harmful ultraviolet rays from the sun to reach the Earth's surface

A layer of ozone gas in the Earth's stratosphere that protects us from harmful ultraviolet rays from the sun

A region of the Earth's atmosphere where air pressure is very low

A region of the Earth's atmosphere where air temperature is very high

Reduce, reuse, and recycle

Drive less and walk, bike, or take public transportation more often

Use energy-efficient appliances and light bulbs

Plant trees and other vegetation

All of the above

To protect us from harmful ultraviolet rays from the sun

To trap heat and keep the Earth warm

To absorb meteoroids before they reach the Earth's surface

All of the above

Cirrus, cumulus, and stratus clouds

Altostratus, nimbostratus, and stratocumulus clouds

Cirrostratus, cirrocumulus, and altocumulus clouds

All of the above

Weather is the day-to-day conditions of the atmosphere, while climate is the average weather conditions of a place over a long period of time.

Climate is the day-to-day conditions of the atmosphere, while weather is the average weather conditions of a place over a long period of time

Weather is the temperature of the air, while climate is the humidity of the air

Weather is the wind, while climate is the precipitation.

The burning of fossil fuels

Deforestation

Agriculture

All of the above

Rising sea levels

More extreme weather events

Changes in plant and animal life

All of the above

Wind is the movement of air from areas of high pressure to areas of low pressure, while breeze is a gentle wind that is typically caused by local differences in temperature and air pressure

Breeze is the movement of air from areas of high pressure to areas of low pressure, while wind is a gentle wind that is typically caused by local differences in temperature and air pressure

Wind is the temperature of the air, while breeze is the humidity of the air

Wind is the wind direction, while breeze is the wind speed.

The temperature at which water vapor in the air condenses and forms dew

The temperature at which water boils

The temperature at which water freezes

The temperature at which water evaporates

A cold front is a boundary between two air masses, one of which is colder than the other, while a warm front is a boundary between two air masses, one of which is warmer than the other

A warm front is a boundary between two air masses, one of which is colder than the other, while a cold front is a boundary between two air masses, one of which is warmer than the other.

A cold front is associated with rain and thunderstorms, while a warm front is associated with snow and sleet.

A warm front is associated with rain and thunderstorms, while a cold front is associated with snow and sleet

Relative humidity is the amount of water vapor in the air compared to the maximum amount of water vapor that the air can hold at a given temperature, while absolute humidity is the actual amount of water vapor in the air

Absolute humidity is the amount of water vapor in the air compared to the maximum amount of water vapor that the air can hold at a given temperature, while relative humidity is the actual amount of water vapor in the air

Relative humidity is associated with how humid the air feels, while absolute humidity is associated with how much water vapor is actually in the air.

Absolute humidity is associated with how humid the air feels, while relative humidity is associated with how much water vapor is actually in the air.

A high pressure system is a region of the atmosphere where the air pressure is higher than the surrounding air pressure, while a low pressure system is a region of the atmosphere where the air pressure is lower than the surrounding air pressure

A low pressure system is a region of the atmosphere where the air pressure is higher than the surrounding air pressure, while a high pressure system is a region of the atmosphere where the air pressure is lower than the surrounding air pressure.

A high pressure system is associated with clear skies and fair weather, while a low pressure system is associated with cloudy skies and precipitation.

A low pressure system is associated with clear skies and fair weather, while a high pressure system is associated with cloudy skies and precipitation.

A cyclone is a low pressure system that rotates in a counterclockwise direction in the Northern Hemisphere, while an anticyclone is a high pressure system that rotates in a clockwise direction in the Northern Hemisphere

A cyclone is a high pressure system that rotates in a counterclockwise direction in the Northern Hemisphere, while an anticyclone is a low pressure system that rotates in a clockwise direction in the Northern Hemisphere

A cyclone is a storm that is characterized by high winds and heavy rain, while an anticyclone is a storm that is characterized by fair weather and light winds

An anticyclone is a storm that is characterized by high winds and heavy rain, while a cyclone is a storm that is characterized by fair weather and light winds.

Rain, snow, sleet, and hail

Fog, mist, and clouds

Wind, pressure, and humidity

Temperature, precipitation, and wind

Acid rain is caused by the release of sulfur dioxide and nitrogen oxides into the atmosphere, while smog is caused by the release of ground-level ozone and other pollutants into the atmosphere

Smog is caused by the release of sulfur dioxide and nitrogen oxides into the atmosphere, while acid rain is caused by the release of ground-level ozone and other pollutants into the atmosphere.

Acid rain is associated with respiratory problems and damage to plants and animals, while smog is associated with heart disease, cancer, and other health problems

Smog is associated with respiratory problems and damage to plants and animals, while acid rain is associated with heart disease, cancer, and other health problems.

Troposphere

Stratosphere

Mesosphere

Thermosphere

Exosphere

The difference in air pressure between two areas

The rotation of the Earth

The heating of the Earth's surface by the sun

All of the above

The condensation of water vapor in the air

The evaporation of water from the Earth's surface

The transpiration of water from plants

All of the above

Carbon dioxide

Methane

Nitrous oxide

All of the above

A layer of the Earth's atmosphere that protects us from harmful ultraviolet rays from the sun

A layer of the Earth's atmosphere that contains most of the Earth's water vapor

A layer of the Earth's atmosphere that contains most of the Earth's clouds

None of the above