T1 P1: Energy Flashcards
2 types of Nuclear Energy.
Fusion and Fission.
Energy is released when a nucleus_____.
Splits.
What particulates are found in burnt fossil fuels?
Carbon dioxide and Sulfur dioxide.
8 Main Energy Resources.
Chemical
Kinetic
Gravitational Potential
Elastic
Thermal
Electrostatic
Nuclear
Magnetic.
Renewable energy resources…
Can be replenished.
Non-Renewable energy resources…
Cannot be replenished.
7 Types of Renewable energy resources.
Wind
Solar
Tidal
Waves
Hydroelectricity
Biofuel
Geothermal.
4 types of Non-Renewable energy resources.
Coal, Natural Gas, Crude Oil (Fossil fuels), Nuclear.
What is Internal Energy?
Energy stored in a systems particles.
How do you calculate Internal Energy?
Internal Energy (J) = Kinetic Energy of particles + Potential Energy of particles.
What are the three ways of energy transfer?
Heating.
An Electric Current.
Use of Forces.
Energy can be…
Wasted or dissipated.
How to calculate Kinetic Energy?
Kinetic Energy (J) = 1/2 x Mass (Kg) x (speed)2
Ek = 1/2 x M x V2
What are 2 things kinetic energy is directly proportional to?
The Mass
The square of speed.
How do you calculate Gravitational Potential Energy?
Gravitational Potential Energy (J) = Mass (kg) x Gravitational Field Strength (N/kg) x Height (m).
How do you calculate Density?
Density = Mass / Volume.
How do you calculate Mass?
Mass = Density x Volume.
How do you calculate Volume?
Volume = Mass / Density.
How do you calculate elastic potential energy?
Elastic Potential Energy (J) = 1/2 X Spring constant (n/m) X extension (m)
What is Specific Heat Capacity?
The energy required to increase the temperature of 1kg of a substance by 1’c
How do you calculate Specific Heat Capacity?
Energy= mass X specific heat capacity X temperature change
Define power.
The rate at which energy is transferred or work is done.
How do you calculate Power?
Energy transferred/time OR Work done/time
How do you calculate efficiency?
useful energy input/total energy input OR useful power output/total power output
