Select the option that best completes the following sentence. Insulators: allow heat to easily flow through themare usually made of metaldo not allow heat to easily flow through themtend to feel very cold or hot when you touch them

A heat conductor transfers heat easily, a heat insulator does not transfer heat easily. In the image, what materials should structures 1 and 2 be made of?

Define the term insulator and explain how this differs to conduction. Identify an example of an insulator and explain how it is used

Conductors and insulators have opposite thermal properties.

Match the correct definition to its corresponding key word. Thermal conductorElectrical conductorPossible AnswersA substance that does not allow heat to pass through it. A substance that allows light to pass through it. A substance that does not allow electricity to pass through it. A substance that allows electricity to pass through it. A substance that does not allow light to pass through it.A substance that allows heat to pass through it.I DON'T KNOWRESETSUBMIT ANSWER

​Select the sentence from the information that best supports which insulation material should be used to minimize the loss of thermal energy from a home.Open-Cell Spray Foam​he cheapest spray foam option is known as open-cell. so-called because the bubbles inside of the foam never completely close. As the foam expands, air gets trapped in between the broken bubbles. These bubbles allow water to pass through them. which can be good or bad depending on the application. Although open-cell spray foam works well for filling in and around wires, pipes, and other obstacles, its insulating power is not very high.​​Source: "What is the Best Insulation?" by Corey Binford.​​Closed-Cell Spray Foam​The bubbles or cells in closed-cell spray foam are closed and tightly packed together. This makes closed-cell spray foam much denser and stronger than open-cell spray foam.It will not absorb water or allow air to pass through it.  This is because the bubbles in closed-cell foam are filled with a gas,  making them much smaller and a better insulator.​​Source: "What is the Best Insulation?" by Corey binford.Vegetable Spray Foams​A new, greener generation of vegetable-based spray foams uses small amounts of oils from soy, sugarcane, corn fructose, and other botanical sources, plus a minimum of 5 percent recycled content.  Vegetable-based foams are blown with water. carbon dioxide. or hydrofluorocarbons (HFCs),  Which do not damage the ozone layer.The more environmentally sound versions are low density meaning , they also have a lower insulating power than the denser. more toxic varieties.