Heated gases will rise to the top of its container. Why does this occur?(1 point)

Question

Responses

Heated gases will increase in kinetic energy and decrease in density.
Heated gases will increase in kinetic energy and decrease in density.

Heated gases will increase in kinetic energy and increase in density.
Heated gases will increase in kinetic energy and increase in density.

Heated gases will decrease in kinetic energy and decrease in density.
Heated gases will decrease in kinetic energy and decrease in density.

Heated gases will decrease in kinetic energy and increase in density.

Answer 1

The correct response is:

Heated gases will increase in kinetic energy and decrease in density.

When gases are heated, the molecules gain kinetic energy, causing them to move faster and spread apart. This increased movement results in a decrease in density, making the heated gas rise above cooler, denser air.

Answer 2

An ice cube is placed on a metal block that is at a room temperature of 30oC. Which statement describes the transfer of heat between the ice cube and metal block?(1 point)
Responses

Heat is transferred from the ice cube to the metal block, and the ice melts.
Heat is transferred from the ice cube to the metal block, and the ice melts.

Heat is transferred from the air to the ice cube, and the ice melts.
Heat is transferred from the air to the ice cube, and the ice melts.

Heat is transferred from the ice cube to the air, and the ice melts.
Heat is transferred from the ice cube to the air, and the ice melts.

Heat is transferred from the air and metal to the ice cube, and the ice melts.

Answer 3

The correct response is:

Heat is transferred from the metal block to the ice cube, and the ice melts.

In this scenario, the metal block, which is at a higher temperature (30°C), will transfer heat to the colder ice cube, causing the ice to melt.