Observe and report on weather, Topic 2: Weather patterns

Question 1

The _____ and the _____ influence our weather–each affects the other.

Answer 1

ocean

atmosphere

Question 2

Label this graph.

Answer 2

Question 3

The ______ is a direct result of heat from the sun. Warm air ______ and as it does, a _____________ area is created and the ____________ _________ _______ is drawn into this space. This movement of air is the ________and is associated with __________ systems. The earth’s_____________determines the direction of the wind.

Answer 3

The wind is a direct result of heat from the sun. Warm air rises and as it does, a low pressure area is created and the surrounding surface air is drawn into this space. This movement of air is the wind and is associated with low pressure systems. The earth’s rotation determines the direction of the wind.

Question 4

Answer 4

Question 5

Answer 5

Question 6

Identify

Answer 6

Question 7

Lable the High Pressure System

Question 8

_________ is also associated with wind and pressure systems. _______. _______ that rises will cool at altitude and this cooled air will fall either gently or ________and produce surface winds outward from the point of descent. This is a high-pressure system.

Answer 8

Cold air is also associated with wind and pressure systems. Warm air that rises will cool at altitude and this cooled air will fall either gently or violently and produce surface winds outward from the point of descent. This is a high-pressure system.

Question 9

Air flowing over the oceans is going to absorb ____________by _________, while similar air flowing over dry land will remain dry.

Answer 9

Air flowing over the oceans is going to absorb moisture by evaporation, while similar air flowing over dry land will remain dry.

Question 10

The air’s pressure is the _________ of air pressing down on the earth. Pressure changes with __________. Air pressure is measured in ____________ (hPa).

Answer 10

The air’s pressure is the weight of air pressing down on the earth. Pressure changes with altitude. Air pressure is measured in hectopascals (hPa).

Question 11

The instrument used to record atmospheric pressure is called a _________.

Answer 11

The instrument used to record atmospheric pressure is called a barometer. Air pressure, atmospheric pressure and barometric pressure are interchangeable terms.

Question 12

At ____ ______ it is around 1,013hPa, as altitude ________ so air pressure ____________. The air pressure at 3,000 metres is about 40% less than at sea level. _____________ are adjusted accordingly; otherwise all high elevations would record low pressure.

Answer 12

At sea level it is around 1,013hPa, as altitude increases so air pressure decreases. The air pressure at 3,000 metres is about 40% less than at sea level. Barometers are adjusted accordingly; otherwise all high elevations would record low pressure.