* not completed

. If the chance of precipitation is reported as being 40 per cent, what does this mean?

Precipitation will fall over 40 per cent of the forecast area. correct incorrect

The chance that precipitation will fall on any random point in the forecast area is 40 per cent. correct incorrect

Precipitation will fall during 40 per cent of the day. correct incorrect

If the sky is overcast there is a 40 per cent chance that precipitation will fall. correct incorrect

* not completed

. Which step in a weather forecast involves compiling and mapping the data that describe the current state of the atmosphere?

Diagnosis correct incorrect

Observation correct incorrect

Prognosis correct incorrect

Analysis correct incorrect

* not completed

. Which forecast method involves comparing a current weather pattern to weather patterns of the past?

Trend correct incorrect

Analog correct incorrect

Persistence correct incorrect

Climatology correct incorrect

* not completed

. Who attempted to develop a method for calculating weather forecasts?

Jacob Bjerknes correct incorrect

Lewis Fry Richardson correct incorrect

John Dalton correct incorrect

Robert Boyle correct incorrect

* not completed

. Which of the following statements about satellites is false?

Polar satellites orbit along longitudinal lines. correct incorrect

Visible satellite imagery is only available during the day. correct incorrect

The brightest images on infrared satellite imagery are the tops of low clouds. correct incorrect

Geostationary satellites orbit with the Earth and are always above the same spot. correct incorrect

* not completed

. Which features are NOT typically shown on surface weather maps?

Isotachs correct incorrect

Weather station symbols correct incorrect

Fronts correct incorrect

Centres of high and low pressures correct incorrect

* not completed

. When analyzing indicators of change on 500 hPa charts, which of the following is a way to take both vorticity advection and thermal advection into account?

The box method correct incorrect

The omega equation correct incorrect

The Coriolis parameter correct incorrect

Rossby waves correct incorrect

* not completed

. The 700 hPa upper-air chart is often used to provide information about which of the following?

Dew-point depression correct incorrect

Vorticity advection correct incorrect

Jet streaks correct incorrect

The boundary between rain and snow correct incorrect

* not completed

. Which upper air chart is used to forecast maximum temperatures?

250 hPa correct incorrect

500 hPa correct incorrect

700 hPa correct incorrect

850 hPa correct incorrect

* not completed

. Which of the following is used in an attempt to negate the chaotic nature of weather and improve forecasts?

Parameterization correct incorrect

Teleconnections correct incorrect

Ensemble forecasting correct incorrect

Prognostic charts correct incorrect

* not completed

. The rules of empirical forecasting have been developed based on observations.

TRUE correct incorrect

FALSE correct incorrect

* not completed

. Polar orbiting satellites pass over any location four times a day.

TRUE correct incorrect

FALSE correct incorrect

* not completed

. Upper-air weather maps show the variation in pressure at sea level.

TRUE correct incorrect

FALSE correct incorrect

* not completed

. The 700 hPa chart is the best one for recognizing omega highs.

TRUE correct incorrect

FALSE correct incorrect

* not completed

. Regional weather models are used for longer-term forecasts.

TRUE correct incorrect

FALSE correct incorrect