Earth Science Lesson 1.1

Front

What is radiation?

Back

Radiation is the transfer of heat energy through electromagnetic waves. It does not require a medium to travel, allowing it to transfer energy through space, such as the warmth from the sun.

Front

What is conduction?

Back

Conduction is the transfer of heat energy through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one, such as a metal spoon heating up in a hot pot.

Front

What is convection?

Back

Convection is the transfer of heat energy through the movement of fluids (liquids or gases). It occurs when warmer, less dense fluid rises and cooler, denser fluid sinks, creating a circulation pattern.

Front

What is albedo?

Back

Albedo is a measure of how much light or radiation is reflected by a surface. It is expressed as a percentage, with higher values indicating more reflection, such as glacial ice having a high albedo.

Front

What has the highest albedo?

Back

Glacial ice has the highest albedo among the options provided, reflecting a significant amount of sunlight.

Front

How does energy move through the crust?

Back

Energy moves through the crust primarily by radiation, which is the transfer of heat through electromagnetic waves.

Front

How does energy move through the mantle?

Back

Energy moves through the mantle mainly by convection, where warmer material rises and cooler material sinks, creating a flow.

Front

How does energy move through the inner core?

Back

Energy moves through the inner core by conduction, which is the transfer of heat through direct contact.

Front

What is the difference between conduction and convection?

Back

Conduction is heat transfer through direct contact, while convection is heat transfer through the movement of fluids.

Front

Give an example of radiation in everyday life.

Back

An example of radiation is feeling the warmth of the sun on your skin, which is heat transferred through electromagnetic waves.