Chapter 7Energy, Work, and

Momentum

Chapter 7Energy, Work, and

MomentumGEE Science

Summer RemediationMr. Nash

Donnie Bickham Middle SchoolRoom 204

GEE ScienceSummer Remediation

Mr. NashDonnie Bickham Middle School

Room 204

OverviewOverview Energy is the ability to do work. Work is the process of moving

matter. Two Categories of Energy:

Potential Energy Kinetic Energy

Energy is the ability to do work. Work is the process of moving

matter. Two Categories of Energy:

Potential Energy Kinetic Energy

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Potential EnergyPotential Energy Stored energy due to an object’s

position or state. Examples:

Water behind a dam Chemical energy stored in a match or

lump of coal Electrical energy of a battery

Stored energy due to an object’s position or state.

Examples: Water behind a dam Chemical energy stored in a match or

lump of coal Electrical energy of a battery

Pg. 139

Kinetic EnergyKinetic Energy Energy of motion as an object

moves from one position to another.

Examples: Moving car Water going over a waterfall Rock rolling down a hill Electrons moving in a circuit

Energy of motion as an object moves from one position to another.

Examples: Moving car Water going over a waterfall Rock rolling down a hill Electrons moving in a circuit Pg. 139

Energy can have many forms:

Energy can have many forms:

Type of Energy Heat Sound Electromagnetic Chemical Electrical Mechanical Nuclear

Type of Energy Heat Sound Electromagnetic Chemical Electrical Mechanical Nuclear

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Examples Fire, friction Thunder, doorbell Sunlight, microwave Battery, wood, match Lightning, generator Gasoline motor,

windmill Radioactive elements

Examples Fire, friction Thunder, doorbell Sunlight, microwave Battery, wood, match Lightning, generator Gasoline motor,

windmill Radioactive elements

Law of Conservation of Energy

Law of Conservation of Energy

Energy is never destroyed, but it can be transferred from one form into another.

Example: A match has stored, potential,

chemical energy. When struck it is transferred into light and heat energy.

Energy is never destroyed, but it can be transferred from one form into another.

Example: A match has stored, potential,

chemical energy. When struck it is transferred into light and heat energy. Pg. 139

Practice 1: Types of EnergyPractice 1: Types of Energy Complete Section B (1-5) in your

notebook. Complete one question from Section

C. Remember your 5 sentence

paragraph structure.

Complete Section B (1-5) in your notebook.

Complete one question from Section C. Remember your 5 sentence

paragraph structure.

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Work, Efficiency, and PowerWork, Efficiency, and Power Work occurs when the force applied to an

object moves the object a certain distance. Work is calculated by:

W = F x d Force is measured in Newtons (N) and

distance is measured in meters (m). One Joule (J) equals one Newton Meter.

Work is measured in Joules (J).

Work occurs when the force applied to an object moves the object a certain distance.

Work is calculated by: W = F x d

Force is measured in Newtons (N) and distance is measured in meters (m).

One Joule (J) equals one Newton Meter. Work is measured in Joules (J).

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Activity 1: WorkActivity 1: Work Complete Activity 1: Work in your

notebook. (1-7).

Complete Activity 1: Work in your notebook. (1-7).

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Activity 1: WorkActivity 1: Work1. 15 J2. 450 J3. 300 J4. 32 J5. 990 J6. 90 J7. 14.4 J

1. 15 J2. 450 J3. 300 J4. 32 J5. 990 J6. 90 J7. 14.4 J

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