Test 2.1 to 2.15 Earth's Energy

Front

What is a wind turbine?

Back

A wind turbine is a device that converts kinetic energy from the wind into mechanical energy, which can then be converted into electricity.

Front

What is the main ingredient needed for ethanol production?

Back

The main ingredient needed for ethanol production is sugars, which can be derived from various plant materials.

Front

Why is solar energy considered renewable?

Back

Solar energy is considered renewable because the sun's energy is abundant and will not run out for billions of years.

Front

What is the most abundant energy resource on Earth?

Back

The most abundant energy resource on Earth is solar power.

Front

What is wind?

Back

Wind is defined as air in motion, caused by the uneven heating of the Earth's surface by the sun.

Front

What is the difference between renewable and non-renewable energy sources?

Back

Renewable energy sources can be replenished naturally in a short period of time, while non-renewable energy sources exist in finite amounts and take millions of years to form.

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, including coal, oil, and natural gas.

Front

What is the greenhouse effect?

Back

The greenhouse effect is the process by which certain gases in Earth's atmosphere trap heat, keeping the planet warm enough to support life.

Front

What is biomass energy?

Back

Biomass energy is produced from organic materials, such as plant and animal waste, which can be used for fuel.

Front

What is geothermal energy?

Back

Geothermal energy is heat energy generated and stored in the Earth, which can be used for heating and electricity generation.