Ecology

Question 1

Ecology

Answer 1

The study of living things and their environment

Question 2

Biotic Factors

Answer 2

Living parts of the environment

Plants, Animals, Micro- Organisms

Question 3

Abiotic Factors

Answer 3

Non Living parts of the environment

air water wind sunlight soil landfroms

Question 4

Cycle >

Cycles in Nature

Answer 4

The path atoms take in the environment

The atoms make things up are constantly moving through the living and Non-Living environment

Question 5

Cycles Example

Answer 5

Water Cycle
Carbon-Oxygen cycle
Nitrogen Cycle

Question 6

Feral Organisms

Answer 6

Organisms that have gone wild.
example
european carp,
rabbits,
feral cats,
pigs

Question 7

How does feral organisms do well

Answer 7

because they are frequently introduced without their natural enemies which keep there numbers in check in the countries from which they have been introduced.

Question 8

What is the guard against the inroduction of new pests into Australia

Answer 8

AQIS

Australian Quarantine Inspection Service

Question 9

Biological Control

Answer 9

Using living species to control the numbers of pest species
eg:
using myxoma virus and Calici virus to control rabbit numbers

> agent of biological control must be specific to the pest species

an example of biological control gone wrong would be using cone toads to control insecr pests in sugar cane; they have poisoned many native animals that have been eating them

Question 10

Pesticides

Answer 10

Chemicals used to kill pests. pesticides have allowed an increase in food production, reduced loses of food in storage and reduced the amount of disease and suffering the disease caused

D.D.T proven effective.

Question 11

Biodiversity

Answer 11

biodiversity refers to the variety of life thatt exists in an ecosystem

Question 12

Captive Breeding

Answer 12

species are bred in incaptivity and released into the wild

Question 13

biodiversity more notes

Answer 13

living species depends on one another in an ecosystem to survive. Domino effect> not having food> starving>extinction

Question 14

Natural Disasters

Answer 14

Cyclone, Bushfires,floods, and droughta

Question 15

economic developtment must be done on a ________ basis so that the preserve environments for future generations`

Answer 15

sustainable

Question 16

distribution

Answer 16

scatters of things

Question 17

abundance

Answer 17

the number of given species

plant abundance-use random quadrants
animal abundance-use capture, recapture methods

Question 18

Waves Carry ____

Answer 18

Energy

Question 19

Energy is carried by _____

Answer 19

Waves

Question 20

Two main types of waves

Answer 20

1) Longtitudinal waves(compression waves)- particles move backward and forward the same as the wave. eg sound
2) transverse waves particles move at right angles to the direction of the wave. eg: electro-magnetic radiation such as light+water waves

Question 21

particles move at right angles to the direction of the wave. eg: electro-magnetic radiation such as light+water waves

Answer 21

Transverse Waves

Question 22

particles move backward and forward the same as the wave. eg sound

Answer 22

Longtitudinal waves(compression waves)

Question 23

When an object vibrates it produces

Answer 23

sound waves

Question 24

Quicker Vibration

Answer 24

Higher Pitch sounds

Question 25

Bigger Vibration

Answer 25

Louder Sounds

Question 26

More information about sound waves

Answer 26

sounds needs molecules present in order to be transmitted | Sounds travels by compressions or longtitudinal waves

Question 27

Reflected sounds

Answer 27

Echoes

Question 28

Music

Answer 28

Sounds have the regular patter;sounds are pleasant and peaceful

Question 29

noise

Answer 29

has no pattern; it is not pleasant to listen to

Question 30

uses of sound

Answer 30

ultrasound-high pitch sound waves used to study internal body structures produced echoes(echolation) are used by some animals such as bats to help them navigate speed of sound in air is 340m/sec or 1220km/hr

Question 31

Electromagnetic radiation travels by

Answer 31

transverese waves

Question 32

short wavelength

Answer 32

high frequency

Question 33

long wavelength

Answer 33

low frequency

Question 34

electromagnetic radiation

Answer 34

``` short wavelength/high freq -- gamma rays x rays u.v light infra-red micro-waves radio waves -- long wavelength/low frequency ``` all travels in a straight line all travels in a speed of light 300,000 km/sec

Question 35

Mirrors

Answer 35

Reflect light 1) concave 2) convex 3) flat

Question 36

concave mirrors

Answer 36

reflect light rays to a focus

Question 37

convex mirrors

Answer 37

reflected rays spread further apart

Question 38

Lenses

Answer 38

retract (bend) light that passes through them

Question 39

concave lens

Answer 39

bend light rays apart

Question 40

conves lens

Answer 40

retracts light rays to a point(focus)

Question 41

examples that contain convex lens

Answer 41

camera telescope overhead projector

Question 42

white light is consist of

Answer 42

the colours of the spectrum mixed all together | ROYGBIV

Question 43

Spectrum Property is called

Answer 43

Dispersion

Question 44

Primary colours

Answer 44

Red Green Blue

Question 45

Red objects

Answer 45

absorbs red light and absorbs other colours

Question 46

white ....

Answer 46

reflects all colour absorbs none

Question 47

black

Answer 47

absorbs all colours, reflects none

Question 48

cone cells(nerve cells)

Answer 48

in the retina of the eye detect colours