Solar Energy on Earth (McGraw Hill) Unit 2 Module 2 Lesson 1

Front

What is albedo?

Back

Albedo is the measure of how much light that hits a surface is reflected without being absorbed. It is expressed as a percentage.

Front

Which color of paper has a low albedo?

Back

Black paper has a low albedo, meaning it absorbs most of the light that hits it.

Front

What is radiation in terms of thermal energy transfer?

Back

Radiation is the transfer of thermal energy from one material to another by electromagnetic waves, such as how energy from the sun reaches Earth.

Front

What is conduction?

Back

Conduction is the transfer of thermal energy between materials through the collision of particles.

Front

Where does conduction primarily occur in the atmosphere?

Back

Conduction primarily affects the lower part of the atmosphere, where it comes in contact with the Earth.

Front

What is convection?

Back

Convection is the transfer of thermal energy through the movement of fluids (liquids or gases) caused by differences in temperature and density.

Front

How does the color of a surface affect its temperature?

Back

Darker surfaces absorb more sunlight and heat up more than lighter surfaces, which reflect more sunlight.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the warming of Earth’s surface due to the trapping of heat by greenhouse gases in the atmosphere.

Front

What role does the sun play in the water cycle?

Back

The sun provides the energy needed for evaporation, which is a key process in the water cycle.

Front

What is the difference between conduction and convection?

Back

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