synoptic features

Isobars are measured in _______

hectopascals (hPa)

Isobars are curved lines drawn on a surface weather map that join areas of ___________

equal mean sea level (MSL) pressure

What type of cloud can result in significant icing and turbulence?

Cumuliform

Pressure gradient is the rate of ______ with horizontal distance measured in ______

change of pressure, kilometres

High- and low-pressure areas can be distinguished by _______

pressure values

Air circulates _____ around the centre of high-pressure systems and ______ around the centre of low-pressure systems.

clockwise, counter-clockwise

In the northern hemisphere, the Coriolis force deflects moving air _____. This is because the Earth rotates ______ on the northern hemisphere.

to the right, counter-clockwise

In the Southern hemisphere, it deflects moving air _____. This is because the Earth rotates ______ on the southern hemisphere.

to the left, clockwise

The Coriolis force does not ______; it affects _____.

cause wind, the direction of the air movement

Air affected by the Coriolis force flows ______ to the isobars.

parallel

Buys Ballot’s Law states that in the northern hemisphere, the pressure gradient force and the Corioils force combine to cause the air to _______, _____ around a high, and _____ around a low.

flow parallel to the isobars, clockwise, counter-clockwise

Buys Ballot’s Law states that, with the wind at your back in the northern hemisphere, the area of _____ lies to _____.

lower pressure, your left

Veering wind is making a ________ in direction.

clockwise change

Backing wind is making a _______ in direction.

counter-clockwise change

As friction diminishes with height, the wind _____ and speed _____.

veers, increases

What is directly proportional to the pressure gradient?

The speed of wind

Convergence occurs at the centre of ______, where the air converges at this point and is forced to rise, resulting in ______.

low-pressure systems, cloud and precipitation

Convection is when air is heated from below by contact with the Earth’s surface. Rising columns of air, known as ______, are usually separated by areas of sinking air, also known as _______.

thermals, subsidence

Orographic lift is when air is forced up _______ by the wind. The type of cloud that results on the ________.

sloping terrain, stability of the lifted air

With frontal lift, air is forced to rise by _______.

a wedge of colder and denser air

Mechanic turbulence is when ______ between the air and ground causes the air to be stirred up into a series of areas of swirling motion known as _____.

friction, eddies

Mechanic turbulence depends on _____ and _____

the strength of the wind, the roughness of the terrain

Friction at the surface and up to 3,000 feet causes the wind to ______ a low-pressure area

flow into

Friction at the surface and up to 3,000 feet causes the wind to ______ a high-pressure area

flow out of

Name the 5 lifting agents.

Convection, orographic lift, frontal lift, mechanical turbulence, convergence