The Environment Flashcards
Define photo synthesis
Process by which plants convert sunlight as energy
Carbon dioxide and water into glucose and oxygen
Explain population
Members of the same species living in the same habitat.
Eg lizard under rock
Define producers (autotrophs)
Plant which produce their own food by the process of photosynthesis
Define consumers (heterotrophs)
Organisms which obtain food by eating other organism
Define herbivore (primary)
Consumer or plant eater
Eg. caterpillars, lizards, mice,
Define carnivore (secondary)
Meat eaters
Sharks
Define predators
Catch food eg spider snake shark
Define scavengers
Eat dead animals
Eg fox
Define omnivores
Animals that obtain food from plants and animals.
Eg human, turtle, fox
Define parasites
Feed in or on body
Eg flea, ticks
Define decomposers
Break down animals and plants into simpler substances.
Eg termites and millipede
List biotic components
Produce
Consumers
Decomposes
Resources (plants)
List physical abiotic components
Waves, currents, temp, light, wind, rain
List chemical abiotic components
Soil, oxygen, carbon dioxide, nutrients, salinity, water.
Explain forests
Create oxygen Supply homes and shelter Influences by temp, rain, soil, position If tops join (closed) If tops don't (open)
Explain the Savannah grass lands
Tropical
Between desert and rain forest
Natural or artificial
1/3 land surface
Explain deserts
20% of world has low rain fall
Hot or cold
40% of Australia
Explain oceans and seas
70% of planet
3 major oceans. Pacific, Atlantic, Indian
Explain coral reef
Colonies that animals & plants live in
Shallow clear water
Sunlight
Explain island
Wa has 2 bio regions
Northwest- we/nt =1.07k sq mill
Southwest- Kalbarri past wa=1.3 k mil
Explain coastlines and sandy beaches
Beaches, shallow water, sand bars
Explain wetlands
Any land regularly saturated by water
6% of world
Explain the reason for talks and scripts
Demonstrate importance for particular places or interests Aim or show something relevant Skill demonstration Explain concepts Spiritual tone
Explain reason for guided walks and tours
Narrate stops and direct people to significant points
Explain the reason for exhibits and signs
Interpreting aspects of the environment Useful to convey info Exhibit - text & image Sign - text Theme awareness/message components = selected detail to act on new knowledge
Explain self guided trails
Multiple stops to gather info
Used to assist in seeing things not normally noticed
Weather is influence by… (4)
Suns heating of the earth
Rotation of earth
Orbits of moon and planets
Difference in air temp. - Wind
Explain air pressure
Pressure exerted on object by weight of air above
Higher above sea level means less air above so less air pressure
Explain wind speed and directions
Pressure force, Coriolis force, centrifugal force and friction.
Act upon parcels of air to move them, resulting in geostrophic wind and gradient wind.
What is geostrophic and gradient wind
Geostrophic- high to low pressure across isobars
Gradient- pressure force, Coriolis and centrifugal act on parcel of air
Explain visibility
Among of cloud cover
Measures in 8ths
Explain reason for precipitation (4)
Dew and frost
Fog
Rain and drizzle
Hail or snow
Explain humidity
Humidity is the condition of the atmosphere with regard to its water vapour content
Explain temperature (5)
Cold - polar Cool- temp Warm- tropical Dry - continental Moist - maritime
Factors of air temp (4)
Sun movement
Air stream movement
Wind strength
Cloud cover
What is persistence method ?
Stating that today will be similar to yesterday
What is the steady state or trend method?
Based on snap shot of weather and knowledge of cloud movement
What is analogue method ?
Weather pattern assuming similar pattern to previous
What is a statistical forecast ?
Mathematica probability base on past atmosphere data
What is probability forecast
Climate data and long term records
Explain the using technology method
Radar and satellite imaging
Planning
Explain short term forecasting in an expedition
Log book to record 9am - 3pm
Wind speed and direction
Explain long term forecasting on expedition
Beyond 10 days
Good knowledge will enhance
Find as much info as possible
Climate trends
Methods for observing natural environment are (4)
Sighting
Tracks
Scats
Field guides
Data can be gathered by (6)
Simple observation and recording Map work Sketching Interviewing Photography Use of scientific instruments
