Vbfnh cn Flashcards
(26 cards)
What is energy?
The ability to do work or cause change.
True or False: Energy can be created or destroyed.
False.
Fill in the blank: The unit of energy in the International System of Units is the _____
joule.
What are the two main types of energy?
Kinetic energy and potential energy.
Multiple choice: Which of the following is an example of kinetic energy? A) A book on a shelf B) A rolling ball C) A stretched rubber band
B) A rolling ball.
What is potential energy?
Energy stored in an object due to its position or condition.
True or False: Gravitational potential energy depends on height and mass.
True.
Fill in the blank: The formula for kinetic energy is _____
KE = 1/2 mv².
What is the law of conservation of energy?
Energy cannot be created or destroyed, only transformed from one form to another.
Multiple choice: Which energy transformation occurs when a battery powers a flashlight? A) Chemical to electrical B) Electrical to light C) Light to thermal
A) Chemical to electrical.
What type of energy is associated with the motion of an object?
Kinetic energy.
True or False: The total energy in a closed system remains constant.
True.
Fill in the blank: The energy stored in a compressed spring is an example of _____ energy.
elastic potential.
What is thermal energy?
The energy that comes from the temperature of matter.
Multiple choice: Which of the following is NOT a form of energy? A) Sound B) Light C) Matter
C) Matter.
What is mechanical energy?
The sum of kinetic and potential energy in an object.
True or False: Nuclear energy is derived from the nucleus of atoms.
True.
Fill in the blank: The formula for gravitational potential energy is _____
PE = mgh.
What is the difference between renewable and non-renewable energy sources?
Renewable energy can be replenished naturally, while non-renewable energy cannot.
Multiple choice: Which of the following is a renewable energy source? A) Coal B) Solar C) Natural gas
B) Solar.
What is sound energy?
Energy produced by vibrating sound waves.
True or False: Electric energy is a form of kinetic energy.
True.
Fill in the blank: The energy of motion is referred to as _____ energy.
kinetic.
What is chemical energy?
Energy stored in the bonds of chemical compounds.
