The television is an excellent invention for Meredith to use as a model for her device. The television converts electrical energy into sound and light, so it can relay the programming the viewer would like to watch. Meredith can think about how the electricity is transformed and try to create something that lights up and makes noise.

If London is waiting at the bottom of the hill and Glen crashes into him there will be a change in the energy transferred when the collision takes place. When Glen hits the back of London his sled will stop or slow down while London's sled will be pushed forward and move. There is a transfer of energy from Glen to London that takes place when any two objects collide.

An inference can be made that the higher something’s speed is, the more energy it has. Higher amounts of energy will result in a more significant change of motion for the object it is acting on. When the speed decreases, the distance the object moves also decreases. There is a direct relationship between speed and energy. A motorcycle driving down the road has the most speed and energy.

Metal is the best conductor of heat because its atoms are arranged in a way that allows electrons to travel freely, meaning they can pass energy more quickly.

A toaster is an example of how a device can convert electrical currents into heat energy. The toaster is plugged into the electrical outlet and electricity flows through the cord and into the heating elements of the toaster. The toaster than warms and crisps the food item placed inside. The heating coils warm the bread as a result of electrical currents being transferred.

The three ways heat can be moved or transferred are through conduction, radiation, and convection. Conduction is heat transfer between two objects that are touching. Radiation is the heat transfer through air or space by electromagnetic waves. Convection is heat transfer by a current of water or air.

Reflection is the term used to describe light bouncing off of an object. When the light touches an object that is smooth and shiny, it will reflect at the same angle at which it hit the surface of the object. Refraction describes the bending of a light ray when it enters a medium of a different speed. Infrared light refers to a type of light rather than the behavior of light.

Each of the examples in this question are scenarios in which sound would be transferred because they all cause vibrations that travel through a medium.

Sound waves must travel through a medium. This medium can be a solid, liquid, or gas. The sound waves move through each of these mediums by vibrating the molecules in the matter. Sound travels fastest through solids. Molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to move more quickly through it.

Fireworks emit three types of energy. The first is sound energy, which is caused by the chemical explosion and can be heard as a loud boom. The fireworks are ignited by lighting the central fuse that burns when the fireworks rise into the sky. Burning these different materials produces light. The colors seen in the show are determined by the amount of energy in heating different chemicals and fuel. The explosion also produces heat or thermal energy.