6.3 Lesson 13 - Hail Formation and Updraft Speed

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 supercooled water droplets.

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

Why do hailstones get larger in size?

• Because of the gravitational pull on the water droplets.

• Due to the transfer of thermal energy to the air above, causing strong updrafts that keep the hailstones in the air longer.

• Because of the chemical reactions between the water droplets.

• Due to the melting and refreezing of snowflakes in the cloud.

What is the relationship between updraft speed and hailstone size according to the table?

• There is no clear relationship; hailstone size is random regardless of updraft speed.

• Smaller hailstones are associated with faster updraft speeds.

• Larger hailstones are associated with slower updraft speeds.

• Larger hailstones are associated with faster updraft speeds.

According to the table, what is the updraft speed for a hailstone the size of a golf ball?

• 60 mph

• 64 mph

• 77 mph

• 103 mph

What pattern do you notice in the data shown in the table regarding the size of hailstones and updraft speed?

• The size of hailstones decreases as the updraft speed increases.

• The size of hailstones and updraft speed are not related.

• The size of hailstones increases as the updraft speed increases.

• The size of hailstones increases as the updraft speed decreases.

What is one explanation for the path that hailstones follow as they grow inside a cloud?

• Hailstones only travel upwards in the cloud.

• Hailstones travel up and down in the cloud many times.

• Hailstones form on the ground and are lifted into the cloud.

• Hailstones grow without any movement inside the cloud.

According to the text, what is a competing explanation for hailstone formation that has been developed more recently?

• Hailstones form as they continually rise within a cloud, growing the whole time.

• Hailstones form due to electrical charges in the cloud.

• Hailstones form from the freezing of raindrops on the ground.

• Hailstones form only at the top of the cloud and fall straight down.

Tags

NGSS.MS-ESS2-5

Why do some hailstones have layers?

• Because they collide with supercooled water droplets that freeze together immediately.

• Because they are made up of different types of ice.

• Because they accumulate layers of dust and debris as they fall.

• Because they pass through various temperature zones in the cloud.

What gives hailstones a clear color in one type of growth, according to the text?

• The presence of impurities in the water.

• The slow freezing of water drops.

• The rapid freezing of supercooled water droplets.

• The accumulation of multiple layers of ice.

How do hailstones get a whitish appearance in the second type of growth mentioned in the text?

• By colliding with dust particles in the cloud.

• By trapping air molecules when supercooled water droplets freeze instantly.

• By absorbing sunlight within the cloud.

• By undergoing a chemical reaction with other elements in the cloud.