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Term 4 Exams 2020 > Ecology & Environmental Impacts > Flashcards

Ecology & Environmental Impacts Flashcards

1
Q

Definition of Population in Australian Ecosystem

A

Population refers to members of the same species living in the same habitat

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2
Q

Definition of Community in Australian Ecosystem

A

Different poppulations living in nthe same habitat

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3
Q

Definition of Eco-system in Australian Ecosystem

A

A community if organisms and their non-living environment

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4
Q

Biotic factors

A

Animals
Plants
Micro organisms

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5
Q

Abiotic Factors

A

Physical including sunlight and temperature

Chemical including water and air

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6
Q

Cycles in Nature

A

Water, Carbon, Nitrogen and Rock

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7
Q

What are the major processes of Water Cycle?

A

Evaporation, Condensation, and Precipitation.

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8
Q

What is the order in a biomass pyramid from top to bottom?

A

Tertiary consumers
Secondary consumers
Consumer
Producer plants

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9
Q

What do organisms use energy for

A 
Move
grow
repair body tissue
respond to environment
keep body warm
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10
Q

List some natural disasters

A 
Flood
Earthquakes
Tsunami
Volcanoes
cyclones
Snowstorms or hail
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11
Q

What is a predator

A

A predator is an organism that eats another organism

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12
Q

What is a prey

A

Prey is an organism that is eaten by a predator

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13
Q

Definition of current

A

A flow of charge or energy

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14
Q

What do all circuits have

A
  1. power supply
  2. a load (output)
  3. A wire that conducts electrons
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15
Q

What is voltage

A

Voltage is the potential difference that measures flow

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16
Q

What is resistance

A

It is what resists the flow of energy through the circuit

17
Q

What is the symbol and sign for Voltage

A

V and volts

18
Q

What is the symbol and sign for current

A

I and Ampere

19
Q

What is the symbol and sign for Resistance

A

R and OHM’s

20
Q

Why are connecting wires made of copper

A

it is a good and cheap conductor

21
Q

What are ammeters used for

A

They are used to measure electric current in a circuit

22
Q

How do you connect an ammeter

A

In series

23
Q

What is a voltmeter used for

A

Measures voltage gain or drop across the terminal

24
Q

How do you connect a voltmeter

A

In parallel

25
Q

What is OHM’s law as a mathematical expression

A

V=IR

26
Q

What does OHM’s Law state

A

OHM’s law states that the resistance can be calculated through a basic expression

27
Q

What is a conductor

A

a material or device that conducts or transmits electricity,

28
Q

What is an insulator

A

a substance that does not readily allow the passage of electricity

29
Q

Name some issues Nuclear Plants raise

A

Political problems of location
Possible use of making atom bombs
Possibility of accident during transportation

30
Q

What is amplitude

A

The maximum displacement of a wave

31
Q

What is wavelength

A

Distance covered by a full cycle of the wave

32
Q

What is the crest

A

The top of the wave

33
Q

What is the Trough

A

The bottom of the wave

34
Q

What is a mirror which is fat called

A

Convex mirror

35
Q

What is a super skinny mirror called

A

Concave Mirror

36
Q

How do lenses work

A

Lenses bend light rays into a new direction,

37
Q

How do glasses work

A

Glasses correct the light direction so that your retina can concentrate on the correct spot.

38
Q

What is the reflection of light

A

The reflection of light is when light hits an object and bounces off it.

39
Q

What is the difference between regular and diffuse reflection?

A

The difference between regular reflection and diffuse reflection is that regular reflection always reflects at the same angle but diffuse reflection will reflect at random angles.

Term 4 Exams 2020 (3 decks)

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