F.6 Fuinnimh Flashcards
What is energy?
Energy is the ability to do work or produce change.
True or False: Energy can be created and destroyed.
False: Energy cannot be created or destroyed, only transformed.
Fill in the blank: The law of conservation of energy states that energy cannot be _______.
created or destroyed
What are the two main types of energy?
Kinetic energy and potential energy.
What is kinetic energy?
Kinetic energy is the energy of an object in motion.
What is potential energy?
Potential energy is stored energy based on an object’s position or state.
Multiple choice: Which of the following is an example of potential energy? A) A moving car B) A drawn bow C) A flowing river
B) A drawn bow
What is the unit of energy in the International System of Units (SI)?
Joule (J)
True or False: Heat is a form of energy.
True
What is the formula for kinetic energy?
KE = 1/2 mv², where m is mass and v is velocity.
What is the formula for gravitational potential energy?
PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.
Multiple choice: Which type of energy is associated with chemical bonds? A) Thermal energy B) Chemical energy C) Nuclear energy
B) Chemical energy
What is renewable energy?
Renewable energy is energy that is collected from resources that are naturally replenished.
List two examples of renewable energy sources.
Solar energy and wind energy.
True or False: Fossil fuels are considered renewable energy sources.
False
What is the primary source of solar energy?
The Sun.
What is energy efficiency?
Energy efficiency is the goal to reduce the amount of energy required to provide the same level of energy service.
Multiple choice: Which of the following is a non-renewable energy source? A) Natural gas B) Wind C) Biomass
A) Natural gas
What is thermal energy?
Thermal energy is the internal energy present in a system due to its temperature.
What is the difference between energy and power?
Energy is the capacity to do work, while power is the rate at which energy is transferred or converted.
What is the unit of power in the International System of Units (SI)?
Watt (W)
Fill in the blank: The process of converting one form of energy to another is known as _______.
energy transformation
What is mechanical energy?
Mechanical energy is the sum of kinetic and potential energy in an object.
True or False: Energy can be transferred from one system to another.
True
What is nuclear energy?
Nuclear energy is the energy released during nuclear fission or fusion.
Multiple choice: Which energy source is derived from the heat of the Earth’s interior? A) Geothermal energy B) Solar energy C) Wind energy
A) Geothermal energy
What is the significance of energy audits?
Energy audits help identify how energy is used and where it can be saved.
What is the role of batteries in energy storage?
Batteries store energy chemically for later use.
