Severe Weather

Which of the following is the criteria for severe weather?

• Weather that produces hail larger than 1 in, winds 58 mph or stronger, or a tornado

• Weather that produces a thunderstorm, hurricane, or monsoon

• Weather that has winds 20mph or stronger, hail larger than 1cm, or a hurricane

• Weather that has sleet, freezing rain, lightning, or thunder

What is the difference between a watch and a warning?

• A watch means the atmospheric conditions could produce severe weather. A warning means severe weather has been seen by an individual or on radar.

• A warning means the atmospheric conditions could produce severe weather. A watch means severe weather has been seen by an individual or on radar.

• A watch means severe weather has been seen by an individual or on radar in the U.S. A warning means severe weather has been seen by an individual or on radar in your specific area.

• A watch means the the severe weather has been seen on radar. A warning means severe weather has been seen by an individual.

Which of the following is not necessary for severe weather to form?

• Wind shear

• Moisture in the atmosphere

• A lifting mechanism

• Stability in the atmosphere

Which of the following best describes instability?

• Warm air rests below cold air in the atmosphere and then rises

• The atmosphere has a high level of moisture

• An air mass or strong wind causes warm air to rise into the atmosphere

• The wind changes direction or speed the higher it gets in the atmosphere

Which of the following best describes wind shear?

• Warm air rests below cold air in the atmosphere and then rises

• The atmosphere has a high level of moisture

• An air mass or strong wind causes warm air to rise into the atmosphere

• The wind changes direction or speed the higher it gets in the atmosphere

Which of the following best describes a lifting mechanism?

• Warm air rests below cold air in the atmosphere and then rises

• The atmosphere has a high level of moisture

• An air mass or strong wind causes warm air to rise into the atmosphere

• The wind changes direction or speed the higher it gets in the atmosphere

How does a tornado form?

• Wind shear creates rotation in the atmosphere, the rotating air is tilted to be vertical and then the radius decreases and the speed increases

• Instability creates rotation in the atmosphere, the rotating air is tilted to be horizontal and then the radius increases and the speed decreases

• A lifting mechanism creates rotation in the atmosphere, the rotating air is tilted to be vertical and then the radius increases and the speed increases

• Moisture creates rotation in the atmosphere, the rotating air is tilted to be vertical and then the radius increases and the speed decreases

When does severe weather most often occur?

• Spring and Fall

• Summer and Winter

• Spring and Summer

• Fall and Winter

When does severe weather most often occur?

• Late afternoon and early evening

• Late morning and early afternoon

• Late evening and early morning

• Early morning and early evening.

Which of the following best describes the formation of hail?

• Water droplets are lifted by an updraft into the sky, they freeze and then fall, they get caught in the updraft again and gain water, they freeze again. This repeats until the hailstone is too heavy for the updraft and it falls to the ground.

• Water droplets are lifted by an downdraft into the sky, they freeze and then fall, they get caught in the downdraft again and lose water, they freeze again. This repeats until the hailstone is too heavy for the updraft and it falls to the ground.

• Water crystals are lifted by an downdraft into the sky, they freeze and then fall, they get caught in the downdraft again and lose water, they freeze again. This repeats until the hailstone is too light for the updraft and it falls to the ground.

• Water vapor is lifted by an updraft into the sky, they freeze and then fall, they get caught in the updraft again and gain water, they freeze again. This repeats until the hailstone is too light for the updraft and it falls to the ground.