What are the different types of energy stores?
- Kinetic
- Gravitational potential
- Elastic potential
- Thermal
- Chemical
- Nuclear
- Magnetic
- Electrostatic
These stores represent various forms of energy present in objects or systems.
How can energy be transferred between stores?
- Heating
- Waves
- Electricity
- Forces (Mechanical Work)
These methods describe how energy moves from one form or store to another.
What is a system in the context of energy?
An object or group of objects where energy is transferred between stores or to surroundings.
Define a closed system.
A system where no energy can escape to or enter from the surroundings, meaning total energy remains constant.
What does thermal conductivity measure?
How quickly energy is transmitted through a material by conduction.
What is the effect of insulating buildings?
Reduces heat loss by using materials with low thermal conductivity.
List factors that influence the rate of heat transfer.
- Thermal conductivity
- Temperature difference
- Material thickness
These factors determine how effectively heat is transferred through materials.
What are the two main classifications of energy resources?
- Non-renewable
- Renewable
This classification is based on the replenishment rate of the energy resources.
Characteristics of non-renewable energy resources include:
- Not replenished quickly
- Will eventually run out
Examples include fossil fuels and nuclear fission.
What are some examples of non-renewable energy resources?
- Fossil fuels (coal, oil, natural gas)
- Nuclear fission
These resources are finite and contribute to environmental pollution.
What are the advantages of renewable energy resources?
- Generally cleaner
- Sustainable
Renewable energy resources include solar, wind, and hydroelectric energy.
What does reliability refer to in energy resources?
The consistency and availability of an energy resource.
Fill in the blank: A _______ is a material that resists the flow of heat.
Thermal insulator
What is an environmental impact?
The effect of an activity on the environment.
True or False: Renewable energy resources can be intermittent and are often expensive to set up.
True
What does carbon neutral mean?
An activity that has no net effect on the amount of carbon dioxide in the atmosphere.
