The engineer is experimenting with using oil instead of water. He knows that water and oil have different thermal conductivity, a measurement of how easily thermal energy flows into or out of a substance. The higher the conductivity, the more easily thermal energy flows. The table shows the thermal conductivity of water and oil.

In which situation would a potato cook the slowest once once the container warms to 185 °F?

A chef needs to choose a pan that will allow food to cook as quickly as possible for a special recipe and has decided that he will use one of three pans. Each pan has the same dimensions and design but is made of a different type of metal. The chef will design an experiment that will test and rank the thermal conductivity of the pans by cooking a hamburger patty to an internal temperature of 170 °F in each pan on the same stove burner. The thermal conductivity is the rate of transfer of energy in the form of heat over a period of time through a material.

In the above scenario, what would be a dependent variable the chef would use in his experiment?

A chef needs to choose a pan that will allow food to cook as quickly as possible for a special recipe and has decided that he will use one of three pans. Each pan has the same dimensions and design but is made of a different type of metal. The chef will design an experiment that will test and rank the thermal conductivity of the pans by cooking a hamburger patty to an internal temperature of 170 °F in each pan on the same stove burner. The thermal conductivity is the rate of transfer of energy in the form of heat over a period of time through a material.

Which is true about the pan with the highest conductivity

 5. Engineers want to make a warming sheet on which to transfer granola bars when they come out of the oven. They want the warming sheet to to prevent transfer thermal energy from the granola bars to keep the bars as warm as possible. The engineers are studying each material's thermal conductivity, or how easily a material can transfer thermal energy in the form of heat. Thermal conductivity is measured in W/m•K. 

Based on the information in the table, which material should the engineers use to make the warming sheet  

Why do urban areas tend to be warmer than rural areas?

4.    A swimmer jumps into a pool and does a cannonball, creating a big splash. Which statement explains the energy exchange as the swimmer hits the pool water?

Carol builds two identical toy cars. She uses motors that provide the same total amount of energy to each car. She starts both cars from rest and lets them speed up for a few seconds. She calculates the kinetic energy for both cars and writes it in the table along with her observations of the sound each car produces. Complete the table to summarize the energy generated by the motors.

Which car most likely produces MORE thermal energy?

A pot of water with an egg sits on a hot stove. Which of the following correctly describes a flow of heat energy in the diagram?

A ball is dropped from a height of 20 feet onto a trampoline. When it hits the trampoline, it produces a 2-foot depression in the trampoline before bouncing back to a maximum height of 10 feet.

What type of transformation occurs when the ball pressing the trampoline down?

A ball is dropped from a height of 20 feet onto a trampoline. When it hits the trampoline, it produces a 2-foot depression in the trampoline before bouncing back to a maximum height of 10 feet.

What type of transformation occurs when the ball bounces back up?

What types of energy below does a car motor produce? pick 2

What types of energy could be produced when the two wheels grind together to crush the grain

What types of energy that the wheel CAN be used to crush the grain?

A sous-vide machine uses a warming coil to maintain the water at a specific temperature. What will happen to the water molecules? pick 2

A student wants to keep their hot chocolate warm for as long as possible. They have a metal cup, a ceramic mug, and a thermos. Using your knowledge of heat transfer, which container should they choose and why?

Near the ceiling of a room the air is warmer. The warm air rises because of

   Which of these are types of potential energy?

Which is an example of heat being transferred by conduction?