Table of Contents
How does a foam-filled winter coat help keep a person warm? It slows down the transfer of thermal energy from outside to inside the coat. It slows down the transfer of thermal energy from inside to outside the coat.
Which best explains how the foam works?
A scientist designed a foam container to help keep frozen foods from melting. Which best explains how the foam works? It reduces the amount of thermal energy that is transferred from outside to inside the container. It slows down the transfer of thermal energy from inside to outside the coat.
What happens when someone places an ice pack on an injured ankle?
Ice numbs the area and reduces the pain. Ice also slows down the flow of blood to the area, which aids in reducing swelling or inflammation. Apply compression to the swollen ankle.
When object one came into contact with object to object to get warmer what can be concluded about the objects before they came into contact with each other?
When Object 1 came into contact with Object 2, Object 2 got warmer. What can be concluded about the objects before they came into contact with each other? Object 2 did not have thermal energy. Object 1 had faster-moving particles.
How is thermal energy transferred during conduction?
Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. These vibrating molecules collide with their neighboring molecules, making them also vibrate faster. As these molecules collide, thermal energy is transferred via conduction to the rest of the pan.
Which material is typically a good thermal insulator?
1. Fiberglass Insulation. Fiberglass is the most common insulation used in modern times. Because of how it is made, by effectively weaving fine strands of glass into an insulation material, fiberglass is able to minimize heat transfer.
Which refers to the thermal energy that flows?
Heat is the flow of thermal energy. A whole branch of physics, thermodynamics, deals with how heat is transferred between different systems and how work is done in the process (see the 1ˢᵗ law of thermodynamics).
Does icing help healing?
It’s a natural part of healing and allows immune cells to better access the injured area. Though inflammation can be positive, to an extent, it can also get out of hand and cause debilitating swelling and pain. Ice reduces swelling and inflammation.
How does ice help pain?
Icing an injury typically takes place immediately after the injury occurs. Using a cold compress or ice pack on a strained muscle can decrease inflammation and numb pain in the area. Icing is effective at reducing pain and swelling because the cold constricts blood vessels and decreases circulation to the area.
Is hot water good for sprained ankle?
Give your injured ankle a few days to recover after the initial injury. When the swelling goes down, you may want to warm your ankle before rehabilitation by soaking it in warm water. Warm tissues are more flexible, and less prone to injury.
How does a foam filled winter coat help keep a person warm quizlet?
How does a foam-filled winter coat help keep a person warm? It slows down the transfer of thermal energy from outside to inside the coat. It speeds up the transfer of thermal energy from outside to inside the coat.
How do conduction particles move?
Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from the hot end down to the colder end of the substance.
What does a burner on a stove produces?
A gas burner is a device that produces a controlled flame by mixing a fuel gas such as acetylene, natural gas, or propane with an oxidizer such as the ambient air or supplied oxygen, and allowing for ignition and combustion. The flame is generally used for the heat, infrared radiation, or visible light it produces.
What is good thermal conductor?
Metals are very good thermal conductors. Materials that are poor conductors of thermal energy are called thermal insulators. Gases such as air and materials such as plastic and wood are thermal insulators.
How does an increase in thermal energy affect molecules?
When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. The end result of increased molecular motion is that the object expands and takes up more space.
What method of thermal energy is at work when heat lamps are used to warm up baby chickens?
What heat transfer occurs when you sit next to a fire and feel the warmth? The way the heat is moving upward from the hot coffee is called Warm air rises and the cool air sinks demonstrate this type of heat transfer. The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer.
Why is foam a good insulator?
Foam is a good insulator for two reasons. First, it is filled with gas bubbles; gases conduct heat less effectively than either liquids or solids, and trapping the gas in small bubbles prevents the gas from effectively transferring heat via convection. You’ve got your closed-cell foam and your open-cell foam.
Why is polyurethane foam a good insulator?
Polyurethane foam is effective as an insulator because it has a high proportion (90 percent minimum) of non-connected closed microcells, filled with inert gas.
What is the best insulator to keep heat in?
Polystyrene and plastic foam are both used as insulators as they have small air bubbles trapped inside them. This makes them very good insulators because heat energy can’t flow through them. The same idea is used to keep the inside of buildings warm.
