Correct Answer: Option 4 – Counterclockwise and towards the center

A low pressure area, or "low", is a region where the atmospheric pressure is lower in relation to the surrounding area. Low pressure systems form under areas of upper level divergence on the east side of upper troughs, or due to localized heating caused by greater insulation or active thunderstorm activity.

Correct Answer: Option 3 – moisture content

An air mass can be described as 'the air with similar properties of temperature and moisture which covers a large area'.

Based on the definition, the other options are incorrect

Correct Answer: Option 2

The dew point is the temperature to which a given parcel of air must be cooled, at constant barometric pressure, for water vapor to condense into water. The condensed water is called dew. The dew point is a saturation point. Hence, the difference in temperature of the dry bulb and the wet bulb will give the dew point temperature.

T = 18^o C = Temperature of dry bulb

Tw = 10^o C = Temperature of wet bulb

Correct Answer: Option 3 – Its known as spring tides

Correct Answer:

A weather station is a facility with instruments and equipment to make observations of atmospheric conditions in order to provide information to make weather forecasts and to study the weather and climate. The measurements taken include temperature, barometric pressure, humidity, wind speed, wind direction, and precipitation amounts. The diagram in option 2 is the correct representation of wind movement from North East at 25 knots and a steady drop of barometric pressure of 2.7 millibars

Correct Answer: Option 4

A barometer is an instrument used to measure atmospheric pressure. It can measure the pressure exerted by the atmosphere by using water, air, or mercury. Pressure tendency can forecast short term changes in the weather.

An anemometer is a device that is used for measuring wind speed, and is one instrument used in a weather station. The one that is illustrated in the figure above is referred to as a cup-type anemometer

Correct Answer: Option 3 – Peru Current

Cold Ocean current flows north from the Antarctic along the west coast of South America to southern Ecuador, then west. It reduces the coastal temperature, making the western slopes of the Andes arid because winds are already chilled and dry when they meet the coast

Correct Answer: Option 4 – near the equator

Along the equator the temperature almost remains same throughout the year with slight changes based on changing seasons and the tilt of the earth around its axis. Hence, city A is near the equator based on the temperature graphs shown above.

Correct Answer: Option 3 – its warmest temperatures in January and February

The temperatures for city C are highest in the months of January and February and reduce as time proceeds further. This suggests a location on the earth receiving very less light. The part of the earth receiving the lowest amount of light is the Southern Hemisphere. Hence, City C is located in the Southern hemisphere.

The graph does not show constant (large / small) amount of precipitation throughout the year. Hence, options 1 and 2 are incorrect.

The graph does not show that the warmest temperatures are in July and August. Hence, option 4 is incorrect.