Clouds and Cloud Formation

What is the process called when water vapor (a gas) becomes a liquid

• evaporation

• condensation

• freezing

• melting

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

Why doesn't cloud formation take place until the dew-point temperature is reached?

• because dew-point is the temperature at which water vapor condenses into water droplets

• cloud formation can take place at any temperature, and does not depend on the dew-point temerature

• because water sublimates at the dew-point temperature

• the dew-point temperature only applies on Earth's surface, not in the atmosphere

Clouds form during the process of...

• evaporation

• condensation

• precipitation

• runoff

Tags

NGSS.MS-ESS2-4

What are the ingredients necessary for a cloud to be created?

• wind, heat, water

• dust, water vapor, low pressure

• cool temperatures, water, vapor

• high pressure, water, wind

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

How are air (atmospheric) pressure and cloud formation related?

• Air pressure has no affect on cloud formation

• When air pressure expands,  cloud formation increases

• Higher air pressure increases cloud formation

• Low air pressure increases cloud formation

Tags

NGSS.MS-ESS2-5

When the weather gets cloudy, that's a good sign that _____________________

• Higher air pressure is coming in

• Temperatures are going up

• Temperatures are moving down

• Lower air pressure is coming in

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Clouds are made of

• water droplets or ice crystals

• Water vapor molecules

• cotton

Tags

NGSS.MS-ESS2-4

Clouds form when air ______________ and water vapor condenses to form droplets

• is heated

• cools down

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Water droplets form on small particles in the atmosphere called condensation nuclei. What are some examples of condensation nuclei?

• dust

• pollen

• salt

• all of the above

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5

Millions of tiny ___________________ clump together to form a cloud.

• water droplets

• gases

• cotton balls

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS2-5