• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/35

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

35 Cards in this Set

  • Front
  • Back
energy
The capacity to perform work
heat
Thermal energy which results in an increase in temperature
kinetic energy
Energy associated with an objects speed or motion
potential energy
Energy associated with an objects position, stored energy and objects capacity to perform work
mechanical energy
The conversion of stored energy into energy that involves movement.
chemical energy
A form of stored energy that is due to the relative position of atoms and electrons
combustion
The process where potential chemical energy in the form of a carbon based fuel is ignited & converted into heat & light.
endothermic reaction
A reaction that takes in heat (temperature decreases)
exothermic reaction
A reaction that releases heat (temperature increases)
joule
The basic unit of energy
power
The amount of energy available or used over a given time (measured in watts)
First Law of Thermodynamics - Law of Conservation of Energy
Energy is neither created nor destroyed, it is changed from one form to another
Second Law of Thermodynamics - law of Increasing Entropy
As energy transforms it degrades and it able to do less work
Efficiency of energy conversions
The ratio of energy input into a system to the useful energy output
Renewable Energy
Sources of energy that are able to last indefinitely because they are replenished by natural processes relatively quickly
Non-renewable Energy
Sources of energy that exist only in limited deposits and are being converted by humans faster than they can form naturally
Fossil Fuels
Formed from dead and decaying organisms trapped in sediment layers – oil, coal & natural gas
Biomass
Energy derived from material produced by living things
Natural Greenhouse Effect
Where gases of the atmosphere serve to keep the earth’s average temp. at 15C
Enhanced Greenhouse Effect
Human induced activity releasing greenhouse gases causing increased heating of earth’s surface
Photosynthesis
A process where plants capture sunlight energy and converts it to complex carbohydrates in the presence of carbon dioxide. Oxygen is produced as a by-product
Respiration
A process where plants & animals convert complex carbohydrates to useable energy in the presence of oxygen. Carbon dioxide is produced as a by-product
Nuclear energy
Where uranium is used as an energy source in reactors to produce heat.
Fusion
A process where two atoms are forced together to create energy.
Troposphere
Lowest level of the atmsosphere. It is the section of the atmosphere where the greenhouse effect takes place.
Stratosphere
Layer above troposphere where ultra-violet radiation is absorbed
Conduction
The transfer of heat energy by contact between two surfaces
Convection
The circular movement of gas or liquid as a result of heating. The gas or liquid is heated, expands, becomes less dense and rises whereupon it cools, contracts and sinks
Energy Absorption
Where energy is taken in by particles and an increase in heat usually occurs
Energy Re-emission or Re-radiation
Where energy is re-released from particles usually at a longer wavelenth
Radiation
Where energy is sent out from a source
Dissapation
Where energy is ‘lost’ to surroundings
Carbon dioxide geo-sequestration
Where atmospheric CO2 is gathered, cooled and stored in the ground
carbon sinks
Where carbon dioxide is taken up and stored in plant material
Kyoto Protocol
An international agreement to reduce greenhouse gas emissions by 8% from 2002 levels by 2020.