Science 4th grade, unit 5
Januay, 2013
SCIENCE 4th grade
UNIT 5
HABITATS
by J. CESAR BRAZO MUR
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Science 4th grade, unit 5
Januay, 2013
All LIVING THINGS need each other to survive. LIVING THINGS are food for other living things.
When they die, fungi, bacteria and worms release their remains back to the soil El Tomillar
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Science 4th grade, unit 5
Januay, 2013
In a FOOD CHAIN, each living organism gets food from other living organisms Produce their own food
plants
PRODUCERS
animals CO
fungi, bacteria... El Tomillar
from the soil, air and the
S R E M U S N
Sun's energy
PREYS are eaten by other animals (predators)
DECOMPOSERS
Get food from other living things
PREDATORS capture and eat other animals (preys)
Eat dead animals and plants. They release nutrients back to the soil 3
Science 4th grade, unit 5
Januay, 2013
Example of forest food chain... Snails eat plants. It is a prey for the bird
Birds eat sails. It is a prey for the fox
CONSUMERS
Foxes eat birds. They are predators
PRODUCER Plants produce their own food from the soil, air and energy from the Sun
Bacteria descompose the remains of all these living things and return organic matter back to the soil
DECOMPOSERS El Tomillar
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Science 4th grade, unit 5
Januay, 2013
Example of ocean food chain... Dolphins get food from small fish
CO
Orca whales eat dolphins
N SU M ER S
Small fish eat zooplankton
DECOMPOSER
PRODUCER Phytoplankton formed by algae that produce their own food
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Zooplankton gets food from phytoplankton
Bacteria and other microorganisms descompose the remains of living organism and return organic matter back to the sea
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Science 4th grade, unit 5
Januay, 2013
ADAPTATIONS
Living things need to adapt to their environments to survive
Physical
Behavioural
adaptations
adaptations The chamaleon changes its color
Some birds migrate from one place to another
are changes in an animal's body that helps it to find food, defend itself
are changes in an animal's behaviour that helps it to interact with it's habitat
and reproduce El Tomillar
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Science 4th grade, unit 5
Januay, 2013
population of rabbits
population of birds population
population
of foxes
of ants
POPULATIONS are groups of organisms of the same species which live together in the same geographical area
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Science 4th grade, unit 5
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Different species
COMMUNITIES is a group of different species that live together and interact in the same geographical area El Tomillar
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Science 4th grade, unit 5
Januay, 2013
A HABITAT is a place that gives an organism food, shelter, water, oxygen and a place to live.
LAND HABITATS: - DESERTS - RAINFORESTS - GRASSLANDS - FORESTS - ARTIC REGION
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WATER HABITATS: - OCEANS and SEAS - PONDS, LAKES and RIVERS
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Science 4th grade, unit 5
LAND HABITATS
Januay, 2013
animals and plants
DESERTS
Animals: Lizards and snakes, spiders, scorpions... Plants: cacti and resistant plants
Animals: Lizards, monkeys, parrots, etc RAINFORESTS Plants: Lots of trees and different plants
ARTIC
Animals: Polar bear, artic foxes, seals... REGION Plants: No trees or plants
GRASSLANDS FORESTS El Tomillar
Animals: Zebras, lions, cheetahs, antelopes... Plants: Mainly grasses and only some trees
Animals: Foxes, mice, owls, bears, rabbits, etc Plants: Evergreen trees mainly 10
Science 4th grade, unit 5
Januay, 2013
RESUME OF THE MAIN CHARACTERISTICS OF LAND HABITATS
Great variations
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Science 4th grade, unit 5
Januay, 2013
WATER HABITATS THEY ARE DIVIDED INTO...
SALTWATER
FRESHWATER
habitats
habitats
SEAS and OCEANS
RIVERS: Streams of running
We find: Saltwater fish
water LAKES: Water with land all
Algae
around it
Some birds
PONDS: Small area of water.
Small invertebrates
This water doesn't move (like in rivers)
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Science 4th grade, unit 5
Januay, 2013
sardine, tuna, seagull albatross
shark...
small invertebrates trout
dragonfly
salmon carp..
mosquito...
turtles, frogs...
duck crane, etc.
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Science 4th grade, unit 5
Januay, 2013
CHECKPOINT
At the end of the unit, I must know...
- What do living organisms get from the food chain? - Why do organisms need each other to survive? - How are organisms classified in the food chain? - What is the difference between producers, consumers and decomposers? - What are the two types of producers and the difference between them both? - Can you give some examples of forest food chain and ocean food chain? - Why do animals adapt to their environment and what types of adaptations have you studied? (definition of both) - Can you say the definition of populations and communities? - Can you say the definition of habitat? - What are the main land and water habitats? What are the main characteristics of each one and what plants and animals can we find there?
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