Section 2 : Convection And The Mantle Assessment

Reviewed by Editorial Team

The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.

Learn about Our Editorial Process

| By Section2assessme

Section2assessme

Community Contributor

Quizzes Created: 1 | Total Attempts: 503

| Attempts: 503

2.

Name one type of radiation. (Worth 1 point)
- The heat felt around a flame
- An ice cube in your hand
- A spoon in a pot of soup
- Stirring a spoon in a pot of soup
Correct Answer

A. The heat felt around a flame

Explanation

The heat felt around a flame can be classified as thermal radiation. Thermal radiation is the transfer of heat energy through electromagnetic waves, such as infrared radiation, which can be felt as heat.

Rate this question:
3.

A _______________ is the flow that transfers heat within a fluid. (Worth 1 point)

Correct Answer
convection current

Explanation
A convection current is the flow that transfers heat within a fluid. Convection occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circular motion. This process allows for the transfer of heat energy from one part of the fluid to another. Convection currents play a crucial role in various natural phenomena, such as the movement of air masses in the atmosphere, the circulation of water in oceans and lakes, and the transfer of heat in the Earth's mantle.

Rate this question:
4.

When a fluid is heated, its density _____________. (Worth 1 point)

Correct Answer
Increases

Explanation
When a fluid is heated, the molecules within the fluid gain energy and move more rapidly. This increased molecular motion causes the fluid to expand, resulting in an increase in volume. As the volume of the fluid increases while its mass remains constant, the density of the fluid decreases. Therefore, when a fluid is heated, its density increases.

Rate this question:
5.

Three things that set convection currents in motion: heating and cooling of the fluid, __________________, and the force of gravity. (Worth 1 point)

Correct Answer
Changes in the fluid's density

Explanation
Convection currents are set in motion by three factors: heating and cooling of the fluid, changes in the fluid's density, and the force of gravity. When a fluid is heated, it becomes less dense and rises, creating an upward flow. Conversely, when a fluid is cooled, it becomes more dense and sinks, creating a downward flow. These changes in density drive the movement of the fluid, along with the force of gravity pulling the fluid downwards. Therefore, changes in the fluid's density play a crucial role in setting convection currents in motion.

Rate this question:

1
6.

Explain what happens to convection current if heat is no longer added to it. (Worth 3 points)

Section 2 : Convection And The Mantle Assessment

What are the three types of heat transfer? (Worth 3 points)

Quiz Preview

Name one type of radiation. (Worth 1 point)

A _______________ is the flow that transfers heat within a fluid. (Worth 1 point)

When a fluid is heated, its density _____________. (Worth 1 point)

Three things that set convection currents in motion: heating and cooling of the fluid, __________________, and the force of gravity. (Worth 1 point)

Explain what happens to convection current if heat is no longer added to it. (Worth 3 points)