Natural Hazards 1
Name two natural hazards that can occur almost anywhere in the world.
Flooding and drought.
Name one natural hazard that occurs worldwide (not just in certain locations).
Any 1 of: Flooding, Drought, Landslides.
Name four types of precipitation
Rain Snow Sleet Hail
Is a tropical cyclone more likely to form over cold oceans or warm oceans?
Warm oceans
What is the definition of a natural hazard?
A natural event that threatens human life and property.
What kind of area is more likely to have landslides?
Mountainous or steep slope areas.
Which natural hazard is related to the overflow of water？
Flooding.
What is the definition of weather?
The condition of the atmosphere of a place over a short period of time.
Name three elements of weather.
emperature, precipitation, wind (others include air pressure, humidity, cloud amount).
On a weather chart, what do isobars represent?
Places with the same air pressure.
Where do most earthquakes and volcanic eruptions usually occur?
Along plate boundaries, especially the Pacific Ring of Fire.
Name a natural hazard that is caused by the movement of Earth’s crust.
Earthquake (or Volcanic eruption).
What is the main difference between weather and climate?
Weather is short-term atmospheric conditions; climate is the average weather over a long period (about 30 years).
What instrument is used to measure temperature?
Thermometer.
What type of climate do summer monsoons bring to Hong Kong?
Hot and humid (or hot and wet) climate.
What is the difference between a natural event and a natural hazard?
A: A natural hazard threatens human life and property, while a natural event does not if no humans are affected.
Hot molten rock INSIDE a volcano
magma
If the arrow on a weather chart points from the north, what does this mean?
The wind is coming from the north (a north wind).
If air pressure drops below 1013 hPa, what kind of weather is likely?
Cloudy or rainy weather.
These two additional natural hazards can occur due to extreme heat and lack of moisture.
drought and forest fire
Why is a landslide in a remote mountain area considered a natural event, not a hazard?
A: Because it does not affect human life or property.
Which two hazards only occur in certain locations, such as along tectonic plate boundaries or warm oceans?
Earthquakes and tropical cyclones.
When air rises, water vapour in the air will do this.
condense
This is found in the stratosphere and protects us from harmful UV rays.
ozone layer
Give one reason why tropical cyclones are more common in coastal regions near warm oceans.
Because they form over warm water above 26°C, which provides the heat and moisture needed.