Heat Transfer
What is the process called when heat moves from one object to another by direct contact?
Conduction
What is the term for the average kinetic energy of the particles in a substance?
Temperature
What material is commonly used to reduce the flow of heat from a house during winter?
Insulation (e.g., fiberglass, foam)
What is the state of matter in which particles are tightly packed and vibrate in place?
Solid
What is the process called when thermal energy is converted into mechanical energy?
Heat engine
Which process is responsible for the transfer of heat through air or liquids?
Convection
Which temperature scale is used in most of the world, except the United States?
Celsius
What is the main purpose of thermal insulation in buildings?
To keep the heat in during winter and out during summer
What is the state of matter where particles are loosely packed and can move past each other?
Liquid
How is energy converted in a refrigerator?
Electrical energy is converted into thermal energy to cool the inside.
What is the process by which heat travels through space in the form of electromagnetic waves?
Radiation
What unit is used to measure temperature in the United States?
Fahrenheit
Which material would be a good thermal insulator?
A) Metal
B) Wood
C) Styrofoam
D) Glass
C) Styrofoam
What is the state of matter where particles are very spread out and move freely?
Gas
In a steam engine, what type of energy is converted into mechanical energy?
Thermal energy
What type of material is a poor conductor of heat and is used in insulation?
Insulator (e.g., rubber, fiberglass)
When the temperature of a substance increases, what happens to the particles in it?
They move faster.
How does double-glazed glass help with insulation?
It traps air between two layers of glass, reducing heat transfer.
What happens to the particles in a substance when it changes from a solid to a liquid?
The particles gain energy and start to move more freely.
What is the conversion of thermal energy into electrical energy called?
Thermoelectric conversion
What is the term for the flow of heat due to the movement of particles in a fluid?
Convection Currents
What is the main difference between heat and temperature?
Heat refers to the total energy of all particles, while temperature refers to the average energy of the particles.
Why is it important to have insulation in homes in cold climates?
It helps to conserve heat, reducing energy costs, and keeping the living space comfortable.
What is the process called when a gas turns into a liquid?
Condensation
In a power plant, what is the primary conversion process that occurs to produce electricity?
Thermal energy is converted into mechanical energy, then into electrical energy.