Work and Energy Chapter Review

Questions and Answers

What is energy?

The ability to cause change (correct)

A form of motion

A measurement of temperature

A type of material

What is thermal energy?

Energy resulting from friction

What is kinetic energy?

Energy in the form of motion

What is the law of conservation of energy?

Energy cannot be created or destroyed Signup and view all the answers

What is gravitational potential energy?

Energy stored by things that are above the earth Signup and view all the answers

What is mechanical energy?

Total amount of kinetic and potential energy in a system Signup and view all the answers

What is potential energy?

Stored energy due to position Signup and view all the answers

What are chemical bonds?

Where chemical potential energy is stored Signup and view all the answers

What is elastic potential energy?

Energy stored in a spring Signup and view all the answers

What is a joule?

SI unit of energy Signup and view all the answers

What is chemical potential energy?

Energy stored in chemical bonds Signup and view all the answers

What does the amount of kinetic energy a moving object has depend on?

Mass and velocity Signup and view all the answers

What does the potential energy of an object depend on?

Height Signup and view all the answers

What is the energy stored in foods and fuels?

Chemical energy Signup and view all the answers

Study Notes

Energy Concepts

Energy is defined as the ability to cause change, encompassing various forms and types.
Thermal energy arises from friction and is a key concept in mechanics and thermodynamics.
Kinetic energy is associated with moving objects and is calculated based on mass and velocity.
The law of conservation of energy states that energy cannot be created or destroyed, only transformed.

Potential Energy Forms

Gravitational potential energy is stored energy due to an object's height above the Earth.
Potential energy is the stored energy that exists due to an object's position or configuration.
Chemical potential energy is energy stored in the bonds of chemical compounds, applicable to fuels and food.

Types of Mechanical Energy

Mechanical energy is the sum of kinetic and potential energy in a system, determining the work done by mechanical systems.
Elastic potential energy refers to energy stored in a compressed or stretched spring, important in various applications.

Units of Measurement

The joule (J) is the standard SI unit of energy, used to quantify energy in different contexts.

Other Important Notes

The kinetic energy of a moving object depends on its mass and velocity; these relationships are fundamental in physics.
The potential energy of an object is influenced by its height in a gravitational field.

Description

Test your knowledge with these flashcards on work and energy concepts. Each card provides critical definitions that are crucial for understanding energy in various forms. Perfect as a study aid for mastering the chapter material.