Year 9 thermal energy transfer and energy types Flashcards
(20 cards)
What are the two main types of energy?
Kinetic energy and potential energy.
True or False: Thermal energy is the energy that comes from the temperature of matter.
True.
Fill in the blank: The energy of motion is known as __________ energy.
kinetic
What type of energy is stored in an object due to its position?
Potential energy.
Which form of energy is associated with the position of particles within an object?
Thermal energy.
What is the primary method of heat transfer through direct contact?
Conduction.
Multiple Choice: Which of the following is NOT a method of thermal energy transfer? A) Conduction B) Convection C) Radiation D) Expansion
D) Expansion.
True or False: Convection occurs in liquids and gases.
True.
What is the process called when thermal energy is transferred through electromagnetic waves?
Radiation.
Fill in the blank: In convection, warmer fluid __________ and cooler fluid sinks.
rises
What is the unit of measurement for energy?
Joule.
True or False: All forms of energy can be converted into thermal energy.
True.
What is the term for the total kinetic energy of the particles in an object?
Thermal energy.
Multiple Choice: Which of the following best describes conduction? A) Movement of fluids B) Transfer of heat through direct contact C) Transfer of heat through waves D) None of the above
B) Transfer of heat through direct contact.
Fill in the blank: __________ is the measure of the average kinetic energy of particles in a substance.
Temperature
What is the primary driver of convection currents in fluids?
Temperature differences.
True or False: Insulators are materials that transfer thermal energy easily.
False.
What do we call the process of energy being spread out from an area of high concentration to low concentration?
Heat transfer.
Fill in the blank: The __________ effect describes how energy moves through space without a medium.
radiative
What type of energy conversion occurs when a substance is heated?
Thermal energy conversion.
