Human Impact - Unit 5

Front

What is a natural source of greenhouse gases?

Back

Volcanic eruptions are a natural source of greenhouse gases.

Front

What evidence supports the idea of global warming?

Back

Worldwide temperatures have been increasing for more than 100 years.

Front

What has been the trend of atmospheric carbon dioxide levels since 1960?

Back

Atmospheric carbon dioxide levels have increased steadily since 1960.

Front

Which country releases the most greenhouse gases?

Back

The U.S. releases the most greenhouse gases.

Front

Is any amount of CO2 in the atmosphere bad for our planet?

Back

False, not all CO2 is harmful; it is a natural part of the atmosphere.

Front

What are greenhouse gases?

Back

Greenhouse gases are gases that trap heat in the atmosphere, contributing to the greenhouse effect.

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.

Front

Name two human activities that increase greenhouse gas emissions.

Back

Burning fossil fuels and deforestation increase greenhouse gas emissions.

Front

What is global warming?

Back

Global warming refers to the long-term increase in Earth's average surface temperature due to human activities.

Front

How do volcanic eruptions affect the atmosphere?

Back

Volcanic eruptions release greenhouse gases and ash, which can impact climate.