Warm-up #35

Front

What are fossil fuels?

Back

Fossil fuels are natural substances formed from the remains of ancient plants and animals, primarily consisting of coal, oil, and natural gas. They are used as energy sources but contribute to air pollution and climate change.

Front

Which energy sources are considered renewable?

Back

Renewable energy sources are those that can be replenished naturally over time. Examples include solar energy, wind energy, hydroelectric energy, and geothermal energy.

Front

What is the impact of burning coal and oil on the environment?

Back

Burning coal and oil releases carbon dioxide and other pollutants into the atmosphere, contributing to air pollution and climate change.

Front

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

Back

Renewable energy sources can be replenished naturally (e.g., solar, wind), while non-renewable energy sources (e.g., coal, oil) are finite and will eventually run out.

Front

What are rare earth metals?

Back

Rare earth metals are a group of 17 elements that are essential for many high-tech applications, but they are found in very low concentrations in the Earth's crust.

Front

Why is oil considered a non-renewable resource?

Back

Oil is considered a non-renewable resource because it takes millions of years to form, and once extracted and used, it cannot be replaced within a human timescale.

Front

What are the main components of natural gas?

Back

Natural gas primarily consists of methane (CH4), but it can also contain other hydrocarbons and impurities.

Front

How does solar energy work?

Back

Solar energy is harnessed from sunlight using solar panels, which convert sunlight into electricity through photovoltaic cells.

Front

What is the significance of using wind energy?

Back

Wind energy is significant because it is a clean, renewable source of energy that reduces reliance on fossil fuels and decreases greenhouse gas emissions.

Front

What are the environmental benefits of using hydroelectric power?

Back

Hydroelectric power generates electricity without burning fossil fuels, thus reducing air pollution and greenhouse gas emissions.