Hail Formation

Which of the following conditions is necessary for hail to form?

• High humidity with no wind

• Strong updrafts and cold temperatures at high altitudes

• Heavy rain and warm temperatures

• No wind and clear skies

Tags

NGSS.MS-ESS2-5

Why do hailstones have layers?

• They freeze instantly when forming

• Water condenses on them evenly

• They cycle through updrafts and collect more ice layers

• They are made from melted snowflakes

What happens to water droplets as they rise in a thunderstorm?

• They turn into rain

• They stay in liquid form

• They freeze if they reach cold enough temperatures

• They disappear

Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-4

What eventually causes hail to fall to the ground?

• Wind blows them out of the cloud

• The temperature in the cloud drops below freezing

• The storm ends

• The hailstones become too heavy for the updrafts to support

What causes hail to form?

• Hail forms when raindrops freeze in warm temperatures.

• Hail forms when water droplets collide with dust particles in the atmosphere.

• Hail forms when water droplets in a cloud get very cold and collide with other water droplets.

• Hail forms when snowflakes in clouds melt and then refreeze.

What is the first step in hail formation?

• Hailstones start forming on the ground

• Water droplets are lifted by updrafts into colder areas of the cloud

• Hail starts as ice at the cloud base

• Water droplets stay liquid inside the cloud

Which best explains why hail forms instead of just falling as rain?

• The water droplets are carried into freezing temperatures by updrafts

• The air is too dry for rain to form

• The storm is too weak to create rain

• The wind cools the water droplets from below

Tags

NGSS.MS-ESS2-5

What happens when hailstones fall through warmer air layers?

• Hailstones freeze completely when falling through warmer air layers.
• Hailstones may melt and get smaller in size when falling through warmer air layers.

• Hailstones gain weight and become larger in warmer air layers.
• Hailstones evaporate entirely before reaching the ground.

Tags

NGSS.MS-PS1-4

Why is large hail dangerous?

• It is very hot

• It melts too quickly

• It falls with great force and can cause damage

• It causes tornados

Tags

NGSS.MS-PS3-5

Where is hail most likely to form?

• Clear skies with no precipitation
• The summer time

• During winter in cold climates
• Strong thunderstorms with severe weather conditions

Tags

NGSS.MS-ESS2-5