Geography Stud Task 1 Flashcards
(60 cards)
What is a biome?
A biome is a community of plants and animals that extend over large areas due to similarities of climate within the specific environment
What are the 5 main biomes?
tundra, grasslands, deserts, polar and forests (deciduous - lose leaves to reflect 4 seasons, coniferous - pine trees - and rainforests)
What is the distribution of biomes based on?
Distribution is based on climate (precipitation and temperature), Latitude dimension and topography (shape of the land)
How does climate affect distribution of biomes?
Temperature and precipitation determine the types of plants and animals that can survive in a biome.
How does Latitude dimension affect distribution of biomes?
Biomes vary with distance from the equator; tropical biomes are near the equator, while polar biomes are found at high latitudes.
How does topography affect distribution of biomes?
Elevation, mountains, and landforms affect biome distribution by influencing temperature, rainfall, and wind patterns.
What are the characteristics of biomes determined by?
Ocean currents
Landforms
Altitude
Latitude
Soils
How are biomes characterised by latitude?
➡ A place’s latitude determines how much heat and sunlight it will receive depending on which season a place is in and how close it is to the equator.
Biomes closer to the equator receive direct energy from the sun, the oceans and air temperatures are warmer, increased rainfall and long hours of sunlight, which encourages tropical rainforests and coral reefs to form
Biomes in the mid latitudes (between 23.5 and 66.5 degrees) are in the temperate zone. These areas still receive direct sunlight, however, this is spread over a larger surface area. Experiences moderate temperatures and rainfall. experiences all 4 seasons. Encourages different biomes to form including Mediterranean, grasslands and forests.
Biomes in between 66.5 and 90 are known as the polar zone. The sun is spread over an even greater surface area and at only 6 months a year due to the Earth’s tilt. Freezing temps all year round. Supports biomes such as tundra, coniferous forests and polar environments.
How are biomes characterised by Ocean currents?
Tropical areas near warm ocean currents have wetter climates, while regions near cold ocean currents are usually drier.
How are biomes characterised by altitude and landform
Altitude refers to how high a biome is. Mountain tops will have cooler climates than at ground level. Mountains may also block areas from receiving rainfall.
Temperature falls by 0.65 degrees for every 100m increase in elevation. Mountains prevent wind from blowing and subsequently rain.
How are biomes characterised by soils?
Soil will determine the amount of vegetation that can be grown in an area and the animals that can use it for food. Soils are made up of rock material, decayed matter and nutrients/minerals.
Choose 2 biomes and examine the physical distribution and the characteristics of the biome
➡ Deserts
Low rainfall
Either hot or cold
Extreme temperatures
Large diurnal temperature range - Large difference between the highest and lowest temperatures of the day
Nocturnal animals
Animals including fennec fox and bilby
Vegetation is sparse
Examples: Hot deserts and cold deserts
➡ Tundra
Cold climates
Absence of trees
Grasses, shrubs, dwarf mosses and lichens
Located in high altitudes around the polar zones
Animals: Arctic hare, arctic fox and snowy owl
Examples: Arctic, Antarctic, Alpine
What are Lines or Parallels of Latitude?
Horizontal lines
What is the main line of latitude?
The equator
What does the equator separate?
The northern and southern hemispheres
What do lines of latitude determine?
The climate of a place
What are the two main factors of climate?
- Temperature
- Precipitation
How is latitude measured?
In degrees, minutes and seconds
Outline how climate is in the top and bottoms of earth and the middle
Top/bottom: Reflect main seasons
Middle: High rainfall and high temperatures
What are lines or meridians of latitude? ie horizontal or vertical
Vertical lines
What are the main lines of longitude?
Prime Meridian and International Date Line
What do lines of longitude form?
Time zones
How many degrees of longitude correspond to one hour?
15 degrees
What does the Prime Meridian split?
Eastern and western hemispheres