Weather Chapter Review

Weather

Lesson Review

Weather

• Weather is the current condition of the atmosphere.

• Weather changes from season to season throughout the year, day to day, and even hour by hour.

Predicting the Weather

• Meteorologists are scientists who study and predict the weather.

• Tools like thermometers measure temperature. As heat changes, the air moves.

• Anemometers show how fast the air is moving.

Predicting the Weather

• Hygrometers give information about the amount of moisture in the air.

• Barometers measure air pressure, or the "weight" of the air.

• Rain gauges track the amount of precipitation.

Multiple Choice

This tool would be used to measure the air temperature.

Multiple Choice

This tool would be used to measure the air pressure.

Multiple Choice

This tool would be used to identify the direction of the wind.

Multiple Choice

This tool would be used to measure the relative humidity.

To find relative humidity...

• Find the temperature on the dry and wet bulbs.

• Subtract to find the difference.

• Find the dry bulb reading on the chart then look across to the difference and that will show the relative humidity.

Multiple Choice

If the dry bulb is 12⁰ C and the wet bulb is 10⁰ C, what is the relative humidity?

• 2 %

• 22 %

• 77 %

• 79 %

The Atmosphere

• These are the layers of gases that surround our planet.

• Different layers have different jobs to protect our planet.

Multiple Choice

This layer burns up most meteors as they enter the atmosphere.

• thermosphere

• mesosphere

• stratosphere

• troposphere

Multiple Choice

This layer contains ozone, which protects us from harmful UV rays.

• thermosphere

• mesosphere

• stratosphere

• troposphere

Multiple Choice

This layer is closest to our Earth. This is the only layer where weather can happen.

• thermosphere

• mesosphere

• stratosphere

• troposphere

Aerosols

• Aerosols are solids and liquids that get into the atmosphere.

• They get into the atmosphere through natural events like pollen, the ocean, or volcanic ash, as well as through human made pollutants such as vehicles.

Water Cycle

• Within the troposphere, weather occurs .

• Water can take the form of solid, liquid, or gas within the cycle.

• There are phases within the water cycle where changes occur.

Water Cycle

Look at the numbers in the water cycle diagram. Think about the name of the phase at each numbered area.

Multiple Choice

Which phase of the water cycle is shown at #1?

• condensation

• evaporation

• precipitation

• transpiration

Multiple Choice

Which phase of the water cycle is shown at #2?

• condensation

• evaporation

• precipitation

• transpiration

Multiple Choice

Which phase of the water cycle is shown at #3?

• condensation

• evaporation

• precipitation

• transpiration

Multiple Choice

Which phase of the water cycle is shown at #4?

• condensation

• evaporation

• precipitation

• transpiration

Convection Currents

• In the troposphere, air is constantly moving up and down.

• This movement happens because of uneven heating on our planet.

Pressure systems

• Cooler air is more dense.

• High pressure systems happen when cool air sinks.

• Light breezes and fair weather occur with this type of system.

Pressure system

• Warm air rises.

• In a low pressure system, warm air rises then cools quickly. The rapidly rising and cooled air condenses.

• This kind of system brings stormy weather and precipitation.

Fronts

• Fronts are areas where warm air and cool air masses meet.

• Fronts bring a change in weather.

Multiple Choice

Identify the type of front shown in the diagram.

• cold front

• occluded front

• stationary front

• warm front

Multiple Choice

Identify the type of front shown in the diagram.

• cold front

• occluded front

• stationary front

• warm front

Multiple Choice

Identify the type of front shown in the diagram.

• cold front

• occluded front

• stationary front

• warm front

Multiple Choice

Identify the type of front shown in the diagram.

• cold front

• occluded front

• stationary front

• warm front

Catastrophic Events

• Catastrophic events can damage an ecosystem.

• Catastrophic events can often be rated.

Multiple Choice

These events happen over land. Low pressure, funnel shaped winds destroy everything in their path. Fortunately, the usually travel only a short distance and last for 15 minutes or less.

• hurricane

• lightning

• tornado

Multiple Choice

This kind of catastrophic event happens over warm, tropical waters. They usually occur between June and October when the water is warmest. This type of event causes high winds, heavy precipitation, and can last for days or weeks. What type of event is this?

• hurricane

• lightning

• tornado