The unequal heating of the Earth's Atmosphere and Surface CAUSES Changes in air pressure WHICH CAUSES WIND

Weather/Wind VANE Arrow points in the direction the wind is blowing.

The name of the wind tells: where it comes from

LOCAL WINDS: Winds that blow over short distances. Sea Breeze – a wind that blows from an ocean or lake onto land. Land warms up faster than water. Land Breeze – the flow of air from land to a body of water. Land cools down faster than water. SEA BREEZE LAND BREEZE

What’s the relationship between wind and waves?

Convection Currents Up-and-down movement of air due to temperature differences

GLOBAL Convection Currents Equator High in the atmosphere, winds blow from the equator to the poles. At Earth’s surface, winds blow from the poles to the equator. LOWER PRESSURE HIGHER PRESSURE

GLOBAL WINDS

pg JET STREAMS: high speed winds that blow about 10 km above Earth’s surface (WEST to EAST)

Coriolis Effect Earth rotates and causes circulating air to be deflected Causes things thrown in straight line to move to the right or left (depends on hemisphere)

Coriolis Effect: Imagine a merry-go-round…

Coriolis Effect Suppose you (represented by the dark blue circle) and a friend (represented by light blue circle) are on a merry go round. You gently toss a ball toward your friend but the ball doesn’t get there!

Coriolis Effect Causes moving objects on Earth to follow curved paths –Northern Hemisphere – follows a path to the right of its intended target –Southern Hemisphere – follows a path to the left of its intended target Acts on all moving objects