Transferring Energy

Transferring Energy

Let's take a closer look at the four different ways that energy can be transferred.

Multiple Choice

When a person plays a guitar what type of energy transfer occurs?

• Kinetic to sound.

• Chemical to light.

Multiple Choice

Which image shows potential energy?

Multiple Choice

Alexis has to identify an invention in her home that converts one energy form into another. She has selected the lightbulb. The energy input into a light bulb is electrical. What type of energy is output from a lightbulb?

• Light and motion

• Heat and motion

• Heat and light

• Sound and light

Correct Answer: heat and light

Let me explain...A lightbulb produces heat and light after it has transformed the electrical energy it receives from the outlet or socket. Bulbs are one example of a household object that converts energy forms. An oven converts electrical energy into heat energy, a toaster concerts electrical into heat energy, and an alarm clock has an output of light and sound energy that is converted from electrical energy.

Multiple Choice

Which diagram models the position of a soccer ball when it has the greatest amount of gravitational potential energy?

Here are a few different ways energy can be transferred...

There are 4 ways energy can be transferred;

Mechanically - machines

Electrically - electricity

Waves - Light waves or Sound waves

Thermal - heat

Multiple Choice

Shay plugs in her computer. When she places it on her lap, she notices it is hot. What is the source of heat?

• sun

• friction

• mixing objects together

• electricity

Multiple Choice

Sound travels through the air as waves.

• True
• False

Mechanical Energy - what exactly is it?

• Mechanical energy is a form of energy. It is all the energy that an object has because of its motion and its position. All living things and all machines use mechanical energy to do work.

• Machines use mechanical energy to do work. For instance, a hammer uses mechanical energy to drive a nail into a board.

Multiple Choice

Which statement best defines Mechanical Energy?

• Energy produced by a machine or moving part.

• Energy that is produced by an electrical current in a circuit.

• Energy from the sun.

• Energy that travels in waves due to vibrations.

Multiple Choice

The diagram shows a cart moving freely along a track. What happens to the energy of the cart as it moves from point A to point B on the diagram?

• Potential energy is transformed to kinetic energy.

• Kinetic energy is transformed to potential energy.

• Both potential energy and kinetic energy stay the same.

Multiple Choice

A fan plugged into a wall is which transfer of energy

• Electrical to mechanical.

• Potential to sound.

Multiple Choice

Gasoline is put into cars to make them run. The ability of gas to power vehicles is an example of ________ energy. It is transformed into mechanical energy, sound, and light.

• electrical

• solar

• chemical

• mechanical

Open Ended

Look at the image. Choose one way that energy is transferred and explain it.