the weather

Name two properties of air.

• Air Pressure

• Air does not contain gases.
• Air has a fixed volume.
• Air is a solid substance.
• air moves

What do you use to

measure temperature?

• ruler
• scale
• measuring cup
• thermometer

What is air pressure?

• Air pressure is the speed of wind in the atmosphere.
• Air pressure is the amount of oxygen in the air.
• Air pressure is the temperature of the air.
• The pressing down force of the air

  on Earth

What is wind?

• Air moves from an area of

  high pressure to an area of lower

  pressure.

• Wind is the movement of air.
• Wind is the temperature of the air.
• Wind is a type of precipitation.

What makes up the atmosphere?

• different gases and dust.

  Some of the

  dust comes from fires and volcanoes on Earth.

• Hydrogen, helium, and neon
• Ozone, methane, and sulfur dioxide
• Carbon monoxide, nitrogen dioxide, and ammonia

Which layer is the airplane in?

• Stratosphere
• Mesosphere
• Exosphere
• Troposphere

Where does weather take place?

• Thermosphere

• Mesosphere

• Stratosphere

• Troposphere

Match the following

• stratosphere

• In the stratosphere the air is not still. Very strong

  winds called the jet stream are located here.

• mesosphere

• the layer of the atmosphere

  closest to Earth. In this layer clouds, rain, snow, and

  thunderstorms occur.

• troposphere

• is between the

  stratosphere and the thermosphere.

• thermosphere

• the top layer of

  the atmosphere. Light displays called

  the northern lights happen here.

What heats the air?

• The sun heats the air.
• Clouds block the heat from the sun.
• Volcanoes heat the air.
• The wind cools the air.

What is air pressure?

• Air pressure is the amount of oxygen in the air.
• Air pressure is the temperature of the air.
• Air pressure is the speed of wind in the atmosphere.
• The pressing down force of the air

  on Earth is called air pressure.