Objectives : Define Kinetic Energy Recognize other energy A-Team: Homework: Concept Review wksht Catalyst: The most gravitational PE: Lying in bed or right after you get out? November 2

Objectives :

Define Kinetic Energy

Recognize other energy

A-Team:

Homework: Concept Review wksht

Catalyst: The most gravitational PE: Lying in bed or right after you get out?

Q: The most gravitational PE: Lying in bed or right after you get out? A: Lying in bed. While in bed, you have a greater height from the ground. Catalyst

Q: The most gravitational PE: Lying in bed or right after you get out?

A: Lying in bed. While in bed, you have a greater height from the ground.

Kinetic Energy The energy of a moving object due to the object’s motion is called kinetic energy. Kinetic energy depends on mass and speed. Kinetic Energy Equation Kinetic energy depends on speed more than mass. Section 3 What is Energy? Chapter 12

The energy of a moving object due to the object’s motion is called kinetic energy.

Kinetic energy depends on mass and speed.

Kinetic Energy Equation

Kinetic energy depends on speed more than mass.

Kinetic Energy Graph Section 3 What is Energy? Chapter 12

Kinetic Energy Section 3 What is Energy? Chapter 12

Other Forms of Energy The amount of work an object can do because of the object’s kinetic and potential energies is called mechanical energy. Mechanical energy is the sum of the potential energy and the kinetic energy in a system. In addition to mechanical energy, most systems contain nonmechanical energy. Nonmechanical energy does not usually affect systems on a large scale. Section 3 What is Energy? Chapter 12

The amount of work an object can do because of the object’s kinetic and potential energies is called mechanical energy.

Mechanical energy is the sum of the potential energy and the kinetic energy in a system.

In addition to mechanical energy, most systems contain nonmechanical energy.

Nonmechanical energy does not usually affect systems on a large scale.

Other Forms of Energy, continued Atoms and molecules have kinetic energy. The kinetic energy of particles is related to heat and temperature. Chemical reactions involve potential energy. The amount of chemical energy associated with a substance depends in part on the relative positions of the atoms it contains. Living things get energy from the sun. Plants use photosynthesis to turn the energy in sunlight into chemical energy. Section 3 What is Energy? Chapter 12

Atoms and molecules have kinetic energy.

The kinetic energy of particles is related to heat and temperature.

Chemical reactions involve potential energy.

The amount of chemical energy associated with a substance depends in part on the relative positions of the atoms it contains.

Living things get energy from the sun.

Plants use photosynthesis to turn the energy in sunlight into chemical energy.

Other Forms of Energy, continued The sun gets energy from nuclear reactions. The sun is fueled by nuclear fusion reactions in its core. Electricity is a form of energy. Electrical energy is derived from the flow of charged particles, as in a bolt of lightning or in a wire. Light can carry energy across empty space. Light energy travels from the sun to Earth across empty space in the form of electromagnetic waves. Section 3 What is Energy? Chapter 12

The sun gets energy from nuclear reactions.

The sun is fueled by nuclear fusion reactions in its core.

Electricity is a form of energy.

Electrical energy is derived from the flow of charged particles, as in a bolt of lightning or in a wire.

Light can carry energy across empty space.

Light energy travels from the sun to Earth across empty space in the form of electromagnetic waves.