Heat Transfer

Robert makes a glass of tea and takes it outside with him. While outside, the thermal energy within the glass of tea is transferred to its surroundings. Based on this information, what else is happening within the glass of tea?

• The kinetic energy of the particles is decreasing and the temperature is increasing.

• The kinetic energy of the particles is increasing and the temperature is increasing.

• The kinetic energy of the particles is decreasing and the temperature is decreasing.

• The kinetic energy of the particles is increasing and the temperature is decreasing.

Brent and Carry know that materials that conduct heat well tend to warm up quickly. They set up an experiment to compare how well four different materials conduct heat. They place a sample of each material on a hot plate and put a piece of wax on top, as shown below.

• Sample 2 will heat up the slowest, causing its wax to melt first.

• Sample 3 will heat up the fastest, causing its wax to melt last.

• Sample 4 will heat up the fastest, causing its wax to melt first.

• Sample 1 will heat up the slowest, causing its wax to melt first.

Mildred takes a pound of frozen hamburger meat out of the freezer and puts it into the refrigerator.

• from the hamburger to the air outside the refrigerator

• from the air in the refrigerator to the hamburger

• from the air in the freezer to the air in the refrigerator

• from the hamburger to the air in the refrigerator

A student wants to measure the temperature change of water after adding 5 cm³ of ice to container 1 and 10 cm³ of ice to container 2. The image below shows the experiment immediately after adding the ice.

• The temperature should drop more in container 2 because more heat will flow from the water to the ice.

• The temperature should drop more in container 2 because the system gains more thermal energy.

• The temperature should drop more in container 1 because more heat will flow from the ice to the water.

• The temperature should drop more in container 1 because the ice melts more quickly.

Hakeem has two objects that are different temperatures. The beginning temperature of object A is 10°C. The beginning temperature of object B is 29°C. He places the two objects so that they are in contact with each other.

• Inside left

• outside left

• right

• left

A student wants to conduct an investigation to compare how much thermal energy different substances can transfer. Before he begins the investigation, he wants to construct a data table he can use to collect his data.

• Table 3

• Table 1

• Table 4

• Table 2

Which of the following is an example of convection?

• a hot object transferring heat to a cooler one

• the rays of the Sun warming the earth

• hot air rising and cooler air falling

• a hot oven warming the air around it

A transfer of heat within a liquid or gas that involves warm particles moving in currents is

• correction.

• conduction.

• convection.

• connection.

How will the temperatures of the water in the containers compare if an equal amount of heat is absorbed by each container of water without boiling?

• Both water temperatures will increase, but container B's will increase more.

• Both water temperatures will decrease, but container B's will decrease more.

• Both water temperatures will increase by the same amount.

• Both water temperatures will increase, but container A's will increase more.

Which of the following statements about radiation is true?

• Radiation is the only form of heat transfer that can travel through the vacuum of space.

• Radiation is the only form of heat transfer that is not experienced on Earth.

• Radiation is the only form of heat transfer that is experienced on Earth.

• Radiation is the only form of heat transfer that is unable to travel through the vacuum of space.