2Geo Chapter 13 Measuring + Forecasting Weather

Define the term weather.

• state of the atmosphere at any given time.

• changes in temperature.

What is the role of weather stations?

• record the changes in weather.

• measure and observe weather.

What is Atmospheric Pressure?

• weight of the atmosphere pushing down on the earth.

• weight of the atmosphere around the world.

What is the instrument used to measure atmospheric pressure?

• the Richter scale.

• a barometer.

What are isobars?

• they indicate rain on a weather map.

• they indicate atmospheric pressure on a weather map.

What is used to measure precipitation?

• hygrometer.

• rain gauge.

What are clouds? Give 2 examples.

• tiny water droplets held in the atmosphere.

• ice crystals held in the atmosphere.

What is the purpose of a wind vane?

• indicates the direction of the wind.

• indicates the speed of wind.

What is humidity?

• the amount of water vapour in the air.

• the amount of precipitation in the air.

What does a hygrometer measure?

• rain.

• humidity.