Energy review

What type of heat transfer is shown in the picture below when warm air rises and cool air sinks?

conduction

In the diagram below, describe the energy transformations that occur in the circuit, starting with the battery, when the light is on.

Chemical to Electrical to Light

Zach's battery powered cell phone was set to vibrate. While sitting in class, Zach gets a text message and his cell phone begins to vibrate. What is the correct order of energy transformation that occurs in Zach's cell phone when he got the text message?

Chemical to Electrical to Mechanical

Mario is frying an egg. The hot pan transfers heat to the egg. What is this an example of?

Conduction

What type of heat transfer occurs when thermal energy of the sand transfers to the camel's feet as soon as the camel's feet touch the sand?

Conduction

This device converts mechanical energy into electrical energy.

Generator

If Mr. Brazell put hot fudge on top of his ice cream. Thermal energy is transferred from the fudge to the ice cream. What is the transfer of thermal energy?

Heat

During an energy transfer, what happens to the total amount of energy according to the Law of Conservation of Energy?

It stays the same

Water is moving in a stream toward the ocean. What best describes the type of energy represented by the water?

Kinetic

When you move your arm, your muscles change chemical energy into which of the following forms of energy?

Mechanical Kinetic

Conduction occurs when _________________________.

Particles collide within a substance or between two objects spreading energy.

As you ski down a mountain, what type of energy transformation occurs?

Potential energy changes to kinetic energy

What energy transformation takes place when water stored behind the Lake Murray Dam is released to flow through the floodgates, turn the turbines and the generators, create electricity which then powers a fan in your home?

Potential mechanical>kinetic mechanical>electrical>kinetic mechanical

A plant receives energy from the sun to make food by photosynthesis. What kind of energy transformations happen during this process?

Radiant solar energy is changed to stored chemical energy.

The purpose of a ______________ in an electrical circuit is to change electrical energy into another type of energy such as the radiant energy emitted from a light bulb.

Resistor

Fruits, vegetables, coal, gasoline, and trees all have store energy. Where did the chemical energy in these items come from originally?

The Sun

In the diagram above, which of the following statements describes the circuit when the light is on?

The circuit is closed.

This is a diagram of a device showing a coil of wires spinning between poles of a magnet and producing electricity. What is this device called

a generator