Energy

Types of Energy

100

What is Kinetic energy?

Energy of Motion

200

What is Potential energy?

Stored energy with the potential for work or movement.

300

What is Nuclear energy?

Energy found in the nucleus of atoms

400

What is Electrical energy?

Energy depending on the flow of electrons.

500

What is Chemical energy?

Energy stored in Chemical bonds.

Energy Transformations

100

What energy transformations occur when you rub your hands together?

Mechanical > Heat and Sound

200

What energy transformations occur when you turn on a flash light?

Chemical > Electrical > Light (and Heat)

300

What energy transformations occur when a ball falls from your hand and then hits the ground?

Potential > Kinetic > Sound (and heat)

400

What energy transformations are involved in the movement of a petroleum car?

Chemical > Heat > Kinetic > Mechanical

500

List ALL the transformations involved in the powering of an electrical toaster from a fossil fuel power station.

Chemical > Heat > Kinetic > Mechanical > Electrical > Heat

Patterns of Energy

100

As a moving car brakes, what happens to its kinetic energy?

Decreases

200

As an object falls and gains speed, what happens to its Potential energy?

Decreases

300

What two properties does Kinetic Energy depend on?

Velocity & Mass

400

What two properties does Gravitational Potential Energy depend on?

Height Location & Mass

500

When I drop a ball and allow it bounce back up, it will not reach the same height, why is this?

Some kinetic energy is used up as heat and sound when it hits the floor. Law of Conservation of Energy.

Sources of Energy

100

What energy source is produced by the stored energy in organic matter & wastes

Biomass

200

This source of energy is produced by stored heat within Earth?  Is it renewable or non-renewable

Geothermal - Non-Renewable

300

What is one issue with reliance on Solar energy?

Solar energy only creates energy when the Sun is visible

400

What resources does a geothermal power station need to operate?

A source of heat underground, either radioactive material or magma. Availability of groundwater, either naturally occurring or pumped into the ground.

500

What is one advantage and one disadvantage of nuclear energy?

Advantage - Clean, no pollution, lots of power per unit Disadvantage - Radiation, Nuclear meltdowns, material stays radioactive for millions of years

Energy Definitions

100

Define non-renewable energy. Give three examples of sources.

Energy that is used faster than it is replenished. Nuclear, Petroleum, Coal, Natural Gas

200

Define renewable energy. Give four examples.

Energy that can be sourced indefinitely for the foreseeable future. Wind, Solar, Tidal, Hydro, Biofuel, Geothermal.

300

This type of kinetic energy is caused by the vibration of particles that travel through a medium (like air)

Sound energy

400

Define the Law of Conservation of Energy.

Energy cannot be created or destroyed. Only transformed/transferred.

500

list at least three kinds of electromagnetic energy

visible light, x-rays, microwaves, infrared, radio waves, gamma rays