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Term 4 Exams 2020 > Ecology & Environmental Impacts > Flashcards

Ecology & Environmental Impacts Flashcards

(39 cards)

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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

Study These Flashcards
A

It is what resists the flow of energy through the circuit

17
Q

What is the symbol and sign for Voltage

18
Q

What is the symbol and sign for current

19
Q

What is the symbol and sign for Resistance

Study These Flashcards
A

R and OHM’s

20
Q

Why are connecting wires made of copper

Study These Flashcards
A

it is a good and cheap conductor

21
Q

What are ammeters used for

Study These Flashcards
A

They are used to measure electric current in a circuit

22
Q

How do you connect an ammeter

23
Q

What is a voltmeter used for

Study These Flashcards
A

Measures voltage gain or drop across the terminal

24
Q

How do you connect a voltmeter

25
What is OHM's law as a mathematical expression
V=IR
26
What does OHM's Law state
OHM's law states that the resistance can be calculated through a basic expression
27
What is a conductor
a material or device that conducts or transmits electricity,
28
What is an insulator
a substance that does not readily allow the passage of electricity
29
Name some issues Nuclear Plants raise
Political problems of location Possible use of making atom bombs Possibility of accident during transportation
30
What is amplitude
The maximum displacement of a wave
31
What is wavelength
Distance covered by a full cycle of the wave
32
What is the crest
The top of the wave
33
What is the Trough
The bottom of the wave
34
What is a mirror which is fat called
Convex mirror
35
What is a super skinny mirror called
Concave Mirror
36
How do lenses work
Lenses bend light rays into a new direction,
37
How do glasses work
Glasses correct the light direction so that your retina can concentrate on the correct spot.
38
What is the reflection of light
The reflection of light is when light hits an object and bounces off it.
39
What is the difference between regular and diffuse reflection?
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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