Weather and Climate Flashcards

1
Q

What is Weather?

A

The conditions of the atmosphere, such as temperature & presence of Rain & Clouds. Weather changes DAILY.

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2
Q

What is Climate?

A

The average weather condition over a long period of time. E.g. 25-35 years.

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3
Q

What instrument is used to measure the weather element: Rain-fall

A

Rain Gauge

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4
Q

What instrument is used to measure the weather element: Temperature

A

Thermometer/Thermistor

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5
Q

What instrument is used to measure the weather element: Sunshine

A

Sunshine Recorder

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6
Q

What instrument is used to measure the weather element: Humidity

A

Hygrometer

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7
Q

What instrument is used to measure the weather element: Air Pressure

A

Barometer

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8
Q

What instrument is used to measure the weather element: Wind Speed

A

Anemometer

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9
Q

What instrument is used to measure the weather element: Wind Direction

A

Wind Vane

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10
Q

What instrument is used to measure the weather element: Cloud Cover

A

EEEYYYEEES
YOUR EYES
YOU NEED TO USE YOUR EYES

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11
Q

Further Explain equipment to measure weather: Rain Gauge

A

Measures amount of precipitation in 24H
Rainfall is measured in milli metres (mm)
It placed ⅓ into the ground and away from any buildings/plants
It’s a collecting bottle in a metal cylinder with a funnel at the top to collect water.

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12
Q

Further Explain equipment to measure weather: Thermometer

A

It measure the maximum and minimum air temperature

It uses Degrees Celsius (C °)/Fahrenheit(F°)

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13
Q

Further Explain equipment to measure weather: Sunshine Recorder

A

It measures the amount of sunlight across 24h

Sunlight goes into a glass sphere which then burns a mark on the removable card marked with lines with hourly intervals

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14
Q

Further Explain equipment to measure weather: Barometer

A

It measure the weight of the air
When there is an increase in air pressure the dial spins clock wise
When there is a decrease in air pressure the dial spins anti-clock wise
It’s measured in milli bars (mb)

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15
Q

Further Explain equipment to measure weather: Anemometer

A

The wind pushes the cups causing them to spin
The faster the wind the faster they spin
It’s put in high places so that nothing obstructs the flow of wind
It’s measured in knots or kph/mph

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16
Q

Further Explain equipment to measure weather: Wind Vane

A

The wind hits the large back side of the vane causing it to spin and point at the direction the the wind is blowing from.
It uses the compass points (North, East etc)
It’s placed in high areas so the the wind flow doesn’t get obstructed

17
Q

Further Explain equipment to measure weather: Your Eyes (cloud cover)

A

It’s measured in oktas

The sky is divided into eights and then judged by how much of the sky is covered up

18
Q

How is relief rainfall made?

A

Warm air is picked up and as it rises up above mountains it condensates. Then it Rains.

19
Q

What is frontal Rain?

A

It’s when a warm air mass meets a cold air mass. The hot air rises above the cold air since it’s lighter then it condensate, turns into a cloud then the air can’t hold onto the water anymore and it starts raining.

20
Q

What is conventional Rainfall?

A

The sun heats up the ground then any moisture evaporates into water vapor and rises. Once it’s high up it gets colder and condensates. Then it rains

21
Q

What happens during a depressing (low pressure)?

A

Low Pressure brings clouds, rain & strong winds. It also brings many clouds.

22
Q

Describe weather with high pressure during the winter

A

The temperature falls below freezing temperatures and brings ice/frost. There can also be mist and fog.

23
Q

What happens with high pressure during the summer?

A

We get very warm temperatures. Cold nights. Temperature reaches over 20°C

24
Q

How many people died during hurricane Katrina?

A

1,836 lost their Lives

25
Q

Name some of the damage caused by hurricane Katrina

A

300,000 homes got destroyed.
18 schools got destroyed and 74 were damaged
$108B of Damage caused
There was 250mm of rain in 24H
Even after 6 months the city still didn’t have a sewage system, gas & electricity
100,000 temporary houses had to be built

26
Q

Name some impacts of Hurricane Katrina

A

All drinkable water has been polluted with sewage
500,000 people became homeless
230,000 people lost there jobs
3M people without electricity
8% of the people who got evacuated never returned

27
Q

When did hurricane Katrina happen?

A

29th August 2005

28
Q

What category was hurricane Katrina?

A

Category 5

29
Q

What is kept in a Stevenson Screen?

A

Thermometer

30
Q

Why is the Stevenson Screen white?

A

So that it repels the the heat so that the thermometer can get a more accurate reading

31
Q

Why is the thermometer kept in a Stevenson Screen?

A

To keep it in the shade and to protect is from rain, snow & high winds

32
Q

Why is the Stevenson Screen raised 1.25m of the ground?

A

So that the thermometer can measure the air heat not the ground heat.

33
Q

What is another name for high pressure?

A

Anti Cyclone

34
Q

Describe Depresions

A
Low Pressure
Air Rising
Strong Winds
Thunderstorms
Snow in Winter
Clouds & Rain
35
Q

Describe Anti-Cyclones

A
High Pressure
Air Sinking
Clear Skies
Sunshine
Cold at Night
Frost at Night