Apples
Explain expansion and contraction in terms of heat
Things expand when heated and contract when cooled
Heat energy is measured in ___________
joules
What heating technology reappeared over time?
Central heating
What substances absorb heat the fastest, a black shirt or white shirt?
A black shirt
The method of heat transfer when liquid or gas particles move from one area to another is called…
Convection
Making effective energy use choices begins with…
Separating societal needs from societal wants
To improve their energy efficiency, many large companies that produce electricity now use a process called…
Cogeneration
Heat energy flows from ___________________ to ____________________
Hot objects to cold objects
What are examples of non-sustainable resources?
Oil, coal, natural gas
The transfer of energy by infrared rays is called…
radiation
According to the Particle Model of Matter (PMOM), heating a substance does what to the particles?
Increases the kinetic energy of the particles
What is a non-renewable resource?
It can not be replaced
The transfer of heat energy between substances that are in contact with each other is called…
conduction
When a metal spoon is put into a bowl of hot soup, heat is transferred from what to what?
From the soup to the spoon
In what substances could a convection current form? (solid, liquid or gas)
Liquid and gas
The energy of movement is called…
kinetic energy
The measure of the average Kinetic energy of the particles in a substance is called…
Temperature
An example of a renewable energy resource is…
Wind, water, solar
The total Kinetic energy of all the particles in a substance is called…
Thermal energy
When a liquid changes to a solid it is called…
freezing
What is the relative particles movement of each state of matter from fastest to slowest movement of particles?
Gas, liquid, solid
During conduction, which way does heat transfer?
From areas of greater kinetic energy to areas of lower kinetic energy
When cooking chicken in the oven, why should the reflective side of the aluminum foil be toward the food?
The reflective side will reflect the heat toward the chicken causing it to cook faster
A major disadvantage of using wind energy is that…
It can only be used in windy areas
Which state(s) of matter has a definite volume? (can take a shape)
Liquid and solid
Materials that do not allow easy transfer of heat are called…
insulators
The four natural sources of thermal energy are…
Fires, geothermal, sun, decay
The name given to energy produced by the sun is…
Solar energy
Heating systems are controlled by…
thermostats
Which energy sources produce extremely hazardous waste material?
nuclear
Every insulator is given a number showing its insulating ability, this is known as its…
r-value
Heating systems that provide heat for a larger area from a single source is known as…
Central heating
Many thermostats contain a strip which is made up of two different metals; this is called a…
Bimetallic strip
Insulation is used to…
Prevent heat transfer from the warm object to the cold object
One source of energy is not limited, does not create pollution, nor does it carry radiation risks. This source is…
The sun
An advantage of using hydroelectric energy is that…
It does not create air pollution